Speaking on ITV, Keane said: "He gets an injury, obviously it’s frustrating he’s gone back on the pitch. Whether he’s trying to stop the play... but he’s gone on to sit on the pitch. I don’t like to see this, this is out of order. Listen, whether he’s been instructed by the manager to go back, he’s obviously had treatment, he’s come off.
"I don’t mind he’s gone back on the pitch, I know players can make mistakes. But to go back on and sit on the pitch, he deserved that yellow card. I don’t like to see it. No, it’s not (good gamesmanship)."