The pace of the game has totally dropped now, with Valencia slowing the pace down and just waiting for the final whistle to be blown.
90'
There will be a minimum of three minutes added time played.
88'
J. Toljan gets yellow.
Toljan is shown a late yellow card after he pulls Guedes down, as he tried to break forward.
86'
A few Celtic supporters are starting to make their way to the exit, disappointed with the lack of goalmouth action from their side, despite a positive start to the game.
84'
There's not long left to play here at Celtic Park and the hosts have failed to test Neto throughout this second half, despite being two goals down. It's been a comfortable performance by the Spanish side.
82'
G. Kondogbia gets yellow.
Kondogbia is shown a yellow card for time-wasting, the midfielder will now be suspended for the second leg next week.
81'
O. Burke gets yellow.
We have our first yellow card of the game and it's shown to Burke, after his high challenge on Garay.
80'
Decent effort! Gameiro with a good header from a corner delivery, but he can't keep the ball down and it flies high over the Celtic crossbar.
78'
K. Gameiro enters the game and replaces C. Piccini.
Valencia make their third and final substitution, with Piccini the man coming off and he has been replaced by Gameiro.
Minute
Description
77'
Valencia are soaking up the Celtic pressure well, getting players back behind the ball and limiting the space the hosts have to play in, which is frustating the Scottish side. It's just not been their night.
75'
The home supporters are urging their side forward, a goal now could really help them in the second leg at the Mestalla next week.
73'
Piccini does brilliantly down the right wing for the visitors, using Soler as a dummy runner. The right-back gets all the way into the penalty area, before his shot is blocked and goes out for a corner.
71'
Much better! Celtic manage to get into the Valencia final third and cause some problems. A low cross comes into the box by Edouard and Weah tries to flick the ball on towards goal but he misses and after a bit of a scramble, Valencia finally manage to clear the ball for a corner, which comes to nothing.
68'
The visitors look very comfortable, keeping the ball well and slowing the pace of the game and playing it at their own tempo. Still plenty of time left on the clock for Celtic to get back into this.
66'
Celtic Park is pretty quiet now, with the Valencia fans being heard from the away section, but the home supporters haven't had much to cheer about in this second half.
64'
Gonçalo Guedes enters the game and replaces D. Cheryshev.
Valencia make their second change of the game, with Cheryshev the man coming off and he has been replaced by Guedes.
63'
Valencia are starting to sit a little bit deeper and soak up the Cetlic pressure, they appear happy to allow the hosts to keep the ball, thanks to their 2-0 advantage.
61'
Weah tries his luck from the edge of the penalty area, as a cross is cleared into his path. The substitute strikes the ball on the volley, but it flies high over the crossbar, not troubling Neto.
59'
O. Édouard enters the game and replaces R. Christie.
T. Weah enters the game and replaces S. Sinclair.
The second change see Christie replaced by Edouard
Celtic make a double substitution, the first change sees Sinclair come off the pitch and he has been replaced by Weah.
57'
It looks like Celtic are ready to make a couple of changes, with a few players getting warmed up on the sidelines and receiving some instructions from the hosts bench.
55'
Celtic are trying to up the pace of their game, but they look short of ideas in attack and Valencia look very comfortable in all areas of the pitch at the moment.
51'
It will be interesting to see how long Rodgers waits before making some changes here, they need to try and salvage something from this game and stop Valencia from scoring another away goal.
49'
Rubén Sobrino has scored a goal for Valencia! Assist by D. Cheryshev.
GOOOAAALLL! Valencia their lead just minutes after the restart, it's 2-0! Celtic lose the ball in the Valencia half and the visitors mount a quick counter-attack with Cheryshev breaking down the left wing. The winger looks up and spots Sobrino bursting into the box and picks him out perfectly, with the striker firing the ball past Bain from close range.
This time it is Cheryshev who turns provider for his team-mate. He whips an excellent ball into the penalty area, straight into the path of Sobrino who fires the ball into the back of the net.
48'
Celtic are once again controlling the ball, put it's all in their own half as Valencia are pressing high up the pitch and not allowing them time inside their defensive third.
46'
F. Coquelin enters the game and replaces Dani Parejo.
Valencia have made a substitution ahead of the second half, with Parejo the man coming off and he has been replaced by Coquelin.
The second half is underway!
45' +1
HALF-TIME: CELTIC 0-1 VALENCIA
45'
There will be a minimum of one minute added time played.
44'
Decent effort! Sinclair forces Neto into making a save at the other end from a tight angle, but it would'nt have counted anyway as the linesman has his flag up for offside.
42'
D. Cheryshev has scored a goal for Valencia! Assist by Rubén Sobrino.
Sobrino gets away from Boyata and inside of going for goal himself, plays a square pass to Cheryshev, who simply couldn't miss from there.
GOOOAAALLL! Valencia take the lead just before the break, it's 1-0! Sobrino races through on goal after just beating the offside trap, he then just has Bain to beat as the Celtic races off his line to try and put him under pressure. However, the striker opts to pass to Cheryshev who was sprinting up in support alongside him, who has a simple tap-in from just a couple of yards out. A vital away goal for the Spanish side.
41'
It's the hosts who are controlling the game ahead of the break, but they are keeping the ball in their own half and struggling to get into the Valencia final third, with the visitors getting everyone back behind the ball.
39'
Just a couple of minutes remaining on the clock now until the break, can either side break the deadlock before the half time whistle?
37'
Almost! Excellent ball between the Valencia centre-backs by Sinclair, looking for the run of Burke. The striker races forward to get on the end of it but luckily for the visitors, Neto is quick to read the danger and sprints to the ball, just getting there in time. He had to make sure he got that right.
34'
Valencia look dangerous on the counter, they have a couple of quick players who can hurt Celtic and the visitors are starting to find their rhythm going forward.
32'
Good run in behind by Cheryshev, he is well picked out down the left by Wass, but he makes his run slightly too early and the offside flag goes up. A good defensive line by Celtic.
30'
The pace of the game has dropped in the last couple of minutes, with both teams struggling to keep the ball in their opponents half.
28'
We're just short of the half an hour mark now and it remains goalless between Celtic and Valencia, with the visitors going the closest to scoring so far, with Soler's header forcing Bain into a good save.
26'
The atmosphere is electric here inside Celtic Park, with the home side trying to urge their team forward and take a good result to the Mestella next week.
22'
The hosts are continuing to dominate possession, but they are starting to lose concentration and play some sloppy passes, allowing Valencia opportunities in good areas of the pitch.
20'
Close call! Celtic try and play out from the back, with Brown playing the ball back to Bain, but his pass only just have enough pace on it and the keeper has to make a sliding tackle to get rid of the ball, with Cheryshev lurking nearby and he would've had an open goal to aim at if he'd of got there first.
17'
Sinclair does well to flick the ball past Piccini and beat the right back for pace down the wing. He tries to find Christie but his pass is cut out, however, he wins the ball back with a strong but fair challenge on Cheryshev.
16'
The visitors are growing into this, not allowing Celtic as much time and space on the ball and they are pushing higher up the pitch.
14'
Celtic are committing a few fouls at the moment, a couple of late challenges have gone in and it's breaking up the flow of the game.
13'
The game is starting to open up now, it's being played at a good pace and both teams look eager to get on the scoresheet early on. An away goal for Valencia could be crucial in determining the outcome of this tie.
9'
This is better by the visitors, they've managed to get on the ball and venture into the Celtic half for the first time. However, the hosts are putting them under heavy pressure straight away and the Spanish side can't get near the Celtic final third at the moment.
7'
Valencia have barely touched the ball so far, they've had to sit deep and defend for much of the opening few minutes and get players behind the ball as Celtic push forward.
5'
Good effort! McGregor forces Neto is making a diving save down to his left, after the midfielder was allowed time and space to run towards goal, before unleashing a low shot at goal. However, it's not close enough to the corner and Neto manages to push the ball away.
4'
Celtic are keeping the ball well in the early couple of minutes, with Valencia happy for them to keep it in the middle of the pitch as the hosts look to get on the front foot straight away.
2'
Early penalty shout! Forrest beats his marker and gets into the penalty area, where he is put under pressure by Lato and goes down, but the referee isn't interested. Christie picks up the rebound and fires a shot at goal, but it's comfortably gathered by Neto.
1'
We're underway!
Hello and welcome to our LIVE match commentary of the Europa League clash between Celtic and Valencia at Celtic Park.
Celtic have started the year in terrific fashion, winning seven successive matches without conceding a goal and they sit top of the SPL, six points clear of Rangers. However, they have never advanced beyond the round of 32 in the Europa League after defeats to Inter Milan in 2015 and Zenit St Petersburg last year.
CELTIC (4-4-1-1): Scott Bain; Jeremy Toljan, Dedryck Boyata, Jozo Simunovic, Emilio Izaguirre; James Forrest, Scott Brown, Callum McGregor, Scott Sinclair; Ryan Christie, Oliver Burke
CELTIC SUBS: Craig Gordon, Jonny Hayes, Odsonne Edouard, Mikael Lustig, Timothy Weah, Kristoffer Ajer, Michael Johnston
VALENCIA (4-4-2): Neto; Cristiano Piccini, Ezequiel Garay, Mouctar Diakhaby, Toni Lato; Carlos Soler, Daniel Parejo, Geoffrey Kondogbia, Daniel Wass; Denis Cheryshev, Ruben Sobrino
VALENCIA SUBS: Jaume Domenech, Goncalo Guedes, Kevin Gameiro, Lee Kang-In, Francis Coquelin, Ferran Torres, Alex Centelles
The teams are out at Celtic Park and kick off is just a few minutes away, stay tuned for all of the match action!
Valencia are in good form themselves after a disappointing start to the season, they've now lost just once in their last nine games and they pulled off a superb comeback last week in the Copa Del Rey, after trailing 2-0 against Real Betis, they scored two late goals to draw.
Celtic have given away too many sloppy passes and despite their dominance in possession, they haven't tested the Valencia defence enough and this needs to improve if they are to get back into the game.
That's all from us today folks, we hope you enjoyed the game!
Celtic will have to score at least three goals next week in order to progress, a tough ask at the Mestalla. However, before that return fixture, they travel to Kilmarnock in the league on Sunday. Meanwhile Valencia face Espanyol at home in LaLiga.
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