"For him, he's also doing very well and benefiting from working every day with a goalkeeper like Petr Cech".
Marco Silva will demand his Everton players are much-improved for the clash against Arsenal, who were in Europa League action on Thursday night and could be tired as a result.
The visitors continued to keep a high tempo, forcing Arsenal into a couple of defensive errors as Emery's side once again tried to play out from the back.
"We are very happy with the goalkeepers".
We don't know now but it's his knee.
Kovacic, on loan from Real Madrid, is averaging more shots per game than Paul Pogba and is eighth in the division for key passes, while Kepa has looked like a bright successor to Thibaut Courtois in goal.
"In the first half last night, the opposition was very deep, so we had big problems getting chances".
Arsenal had nearly two-thirds of possession during the first half but his team did very little with it, while they looked wide open at the back every time Everton attacked.
After 108 goals in 397 games for Arsenal, Walcott moved on to Everton, and has so far notched five goals in 20 games for Everton, with the winger no doubt hoping to add to his tally today.
With Arsenal enjoying more of the ball after the interval they were denied a penalty by referee Jon Moss, who was unmoved by claims of handball against Jonjoe Kenny. "We deserved more. It didn't reflect what happened on the pitch", Silva said.
Aubameyang is having to play on the left wing to accommodate Lacazette as the team's central striker, but it is not stopping the Gabon striker from scoring.
The former Paris Saint-Germain coach wants Arsenal to finish in the top four and win the Europa League in a bid to return to Champions League football after two years of absence.
The win - and Arsenal's first clean sheet of the season - pushes the Gunners up to sixth in the table, while the Toffees stay in 12th place.
In Arsenal's first three Premier League games of the season - the defeats to Chelsea and Manchester City and win against 17th-placed West Ham United - he looked isolated, with his involvement limited.