El Ghazi comes on to replace opening goalscorer Trezeguet.
87'
Awful Saka pass is picked up with ease by the Villa defence.
86'
Grealish turns another Arsenal defender but his heavy touch allows the Gunners to win it back.
85'
Cash's cross is headed away but the Arsenal players are just walking now so Villa win it back.
85'
Grealish wins it back and then comes up with a sublime bit of skill to beat three Arsenal players and play the pass.
84'
Tierney briefly squares up to Douglas Luiz but then walks away.
83'
Villa win a free-kick right on their own corner flag.
83'
The move breaks down and Arsenal are coming back again...
83'
Taken short by Saka and the cross is flicked away for the Villa counter.
82'
Heaved behind for a corner by Cash.
82'
Aubamayang misscontrolls the ball and loses possession - he has been pretty poor tonight as well.
81'
Bellerin's cross is cleared away by Matty Cash.
81'
Arsenal come away with it and look to create something through Pepe on the far side.
80'
Arsenal have not only been sloppy today, but they are also back looking like the Arsenal of past seasons without a care in the world. lack of quality and lack of desire...
80'
Watkins outmuscles Gabriel yet again...
79'
The long ball towards Grealish is out for an Arsenal through on the near side.
78'
Barkley's ball is missed by Trezeguet and all the way out for a throw.
78'
Brilliant bit of skill from Barkley as he beats three men, runs into the box, and then has a shot deflected behind for a corner.
GOAL ASTON VILLA!!! Exceptional yet again from Villa. Martinez spots the run of Grealish and distributes brilliantly, the England midfielder runs the length of the pitch, shaking off pressure left right and centre, and then plays in Watkins to sweep home for his brace and 3-0!
75'
Tierney floats a cross in but Martinez is there well to claim it.
74'
Luiz wins the free-kick inside the Arsenal half.
73'
It falls to Grealish this time but his shot is cleared off the line!
GOAL ASTON VILLA!!! Another sensational Aston Villa goal. Luiz clips it across the face before Barkley volleys it back across first time on his weak foot for Watkins to slide in with the header. That was a truly brilliant goal all round and Villa will be hard to catch now!
71'
The Barkley ball doesn't clear the first man.
71'
Targett's cross is blocked and behind for a corner.
70'
A ball through searching for Aubamayang is covered by cash and collected by Martinez in the Villa goal.
69'
Pepe curls the shot just wide - Arsenal have stepped things up here and they might just nab an equaliser here.
68'
Nketiah gets into the box before teeing up Pepe but he is offside.
67'
Matty Cash is down injured but should be ok to carry on.
66'
Tierney puts a great ball across but Elneny's shot is blocked by his own play in Nketiah.
65'
Pepe beats a man and puts a low cross in but Villa get it away.
GOAL ASTON VILLA!!! A quite brilliant Villa goal. Grealish and Barkley combine on the edge before flicking it through to Targett who puts it across the face for Trezeguet to tap into an empty net at the far post!
24'
Arsenal recover and Villa are forced to work the move.
24'
Tierney beat a couple down the left-hand side but his cross was cut out and now Villa can counter...
23'
Sloppy from Grealish and Arsenal have it back.
23'
McGinn involved again as he wins a throw on the Arsenal corner flag with a good bit of hustle.
22'
Gabriel loses possession and Villa have the throw-in in line with their own box.
22'
Willian's delivery is short to Tierney on the edge but his shot is blocked and Villa get it away.
21'
Aubamayang beats three men and is then fouled in the corner by Matty Cash
20'
Arsenal methodically try to work the cross but Villa sit in and force them back into their own half.
19'
villa steal it back off Arsenal and look to assert their own period of dominance.
18'
Saka puts it straight out this time for a Villa goal-kick.
18'
Saka puts the ball in for Arsenal this time but Konsa gets it away.
17'
Targett crosses in but Bellerin scoops it away.
16'
Long ball from Martinez runs all the way through for an Arsenal throw.
15'
The Bellerín cross is too close to Martinez and the Villa keeper claims it with ease.
14'
Arsenal continue to dominate possession in their own half.
13'
Willian gets underneath the half-volley and slices it over the bar for a goal-kick.
12'
Ball over the top from Arsenal skids beyond Saka and out for a Villa goal-kick.
11'
Arsenal win the free-kick for a high foot against McGinn on Bellerin.
10'
Massive Arsenal chance as the McGinn backpass goes astray but Partey can't capitalise as Martinez denies the Ghanain.
10'
Leno puts it straight out for a Villa throw.
9'
Arsenal win the throw deep inside their own half.
8'
Arsenal are standing off and happy to let Villa have the ball here.
7'
Konsa wins the free-kick off Lacazette.
7'
Trezeguet's crossed floats all the way out or an Arsenal throw.
6'
Villa pick off the Arsenal pass and look to hold possession.
5'
GOAL RULED OUT!!! Barkley is adjudged to have obstructed the view of Bernd Leno.
4'
Martin Atkinson has gone to the monitor...
3'
The lines are out and I think that this is going to be ruled out...
2'
VAR CHECK ONGOING - Barkley was offside but did he obstruct the view of Bernd Leno in goal. The Arsenal keeper was never saving it but you never know these days...
1'
GOAL ASTON VILLA!!! Brilliant work from Grealish who beats his man and then tees up McGinn who knocks it around Lacazette and slams it into the top corner to give Villa the leade inside 45 seconds!
1'
We are underway at the Emirates!!!
Start of match
PRVW
The players are out and we are nearly underway here at the Emirates!
PRVW
So, Arsenal are completely unchanged from their win over Manchester United whilst Aston Villa bring in Bertand Traore to replace the injured Trezeguet in attack. not much to report team news wise then...