Arsenal forward Alexis Sanchez's picked up an injury on international duty with Chile and did start the Gunners game against Manchester United on Saturday.

"He wore a bandage before the game because of tightness in his hamstring but he was checked before the game," Wenger said.

"I follow the medical staff and the player's advice, then make a decision.

"I have never demanded anyone to be injected to play. The suggestions we push Sanchez to play are completely wrong."