Arsenal boss Arsene Wenger admits Ashley Maitland-Niles could play centrally today against Nottingham Forest.
The youngster has been used at fullback so far by Wenger.
"It's a possibility," Wenger said ahead of their FA Cup tie. “It's his preferred position but at the moment I have Kolasinac out, Monreal out and I don't have much choice on the left side unless I play another young boy in Josh Da Silva. I haven't made that decision yet.
“I don't see a difference with the guys who have played more in the Premier League than the guys who have played in the Europa League. It's true that some of them have a bit of a harder life as they want to play as well.
“I rate their contribution and I rate them as players as high as the guys who play. But I have to make decisions. That's the kind of problems that every manager has."