Arsenal boss Mikel Arteta will not rule out Kieran Tierney playing again this season.
Arteta insists his recovery from surgery can mean his season isn't over.
He said, "I don't know. He just had surgery yesterday.
"Its very early to understand how everything will develop. He will be out for a period we estimate and in which condition after that period I think it will be to soon to say something or not."
"The player has to do the maximum he can to be in the best possible condition as quick as possible and I am sure Kieran will do that and once he is there and can compete and we can see what kind of risks or not. I am sure he will do that."