Arsenal boss Arsene Wenger admits he could employ a back three system more regularly.

Wenger's use of a back three for the first time at Middlesbrough on Monday has been a hot topic this week.

The Arsenal manager was asked whether he would adopt a similar tactic in the Emirates FA Cup semi-final against Manchester City.

Wenger said, "It is an option, yes. But what will I do? You will understand that I won't tell you know.

"You know, it was more destined to give us a bit more defensive solidity because recently away from home we conceded too many goals."