The north Londoners were 4-0 down within the first 20 minutes of Saturday's trip to Anfield, and the Pole has urged his team-mates to bounce back against Manchester United
The north London club's title credentials took a huge dent on Saturday as Liverpool ran riot at Anfield, winning 5-1 courtesy of a 20-minute salvo at the start of the match.
|119/1||Arsenal are 119/1 with Betway to beat Manchester United 5-1|
“We represent one of the biggest clubs in the world and what we did early on is not acceptable,” the 23-year-old goalkeeper told reporters.
“We said that at half-time, we went out in the second half with a different attitude and it was much more of an even game.
“But as I said we will learn our lesson from this and respond quickly against Man United.”
The Gunners' were overtaken at the top of the Premier League table following the weekend's results, with Chelsea moving to the summit and Liverpool closing to within five points of Arsene Wenger's men.