Former Chelsea defender William Gallas has said he doesn’t understand Graham Potter’s decision to play Raheem Sterling as a left wing-back against RB Salzburg.

Potter has been in charge of Chelsea for just one game – a 1-1 draw with RB Salzburg in the Champions League.

Gallas doesn’t quite understand Potter’s decision to play Sterling out of position – in a left wing-back role, and the former Blue sees it as a problem.

“That is a problem. When I saw Sterling playing as left wing-back, I didn’t understand it,” Gallas told Genting Casino.

“It’s difficult for me to understand why he wants to experiment with something like this, especially in a Champions League game.

“You are playing at home and you put Cucurella as a centre-back, you have Fofana on the bench with Koulibaly, Chalobah on the bench, and you put Sterling as a left-wing back? I don’t understand.

“In the end, they didn’t have a good result, they drew 1-1. People will always judge the result, and the question is why did he put those two players in those positions?

“Graham Potter seems like a nice guy and a good manager, but I’m still waiting to see what he’s going to do to get Chelsea back to top form.

“He looks very calm, and looks like he likes to have conversations with his players from what I see from the outside, but I don’t know if he’s like this in reality. I’m still waiting.

“He did a good job at Brighton, but Chelsea is not Brighton, he has gone to another level with more expectations, more pressure, so it will be good to see if he can be the right manager.”