Before the match, pundit Rooney had criticised Rashford's work rate and advised him to put in the hard yards to shine through.
"He’s a player who’s come through, he’s got a massive amount of potential and already shown a lot of that, but I think for different reasons he’s found this season difficult," Rooney said.
"We’ve obviously seen stuff in the headlines. But for Marcus the main focus is get your head down and more importantly work hard, I think that’s what everyone wants to see. His ability will get him the goals, we want to see Marcus enjoying his football but also working hard, work for the team, that’s what everyone wants to see."