Arsenal legend Martin Keown wants defensive midfielder Granit Xhaka to learn the art of tackling.

The Swiss international has been a significant disciplinary problem for the Gunners in matches, having received five red cards in the past five years for the club.

Keown believes that Xhaka, who apologized for his red card in the Carabao Cup semi-final against Liverpool, is only going to cause the team more problems if he does not improve his tackling.

Speaking to TalkSPORT, Keown said: "They can't afford to let him go. But the one worrying things he did says, the player, was that he is not going to change.

"Well he is going to have to change. He is going to learn he can't just give up his place on the team.

"These sendings off have been ridiculous. He doesn't seem to be learning. When Wenger first signed him by the way, he paid £35m for him, he said I can't believe the player can't tackle.

"He cannot tackle. I can't imagine my career without being able to tackle. It's a basic thing he needs to learn.

"The decisions, when to go to ground and when not to. Xhaka does need to learn. The fact he is actually holding his hand up saying no I'm not going to change, it's more worrying than what's gone on before.

"Every time he goes, they lose. He's a senior player in there. Xhaka has to learn! When I hear people saying "sorry, I won't change"… we're all in trouble here."