West Bromwich Albion boss Alan Irvine is wary of the attacking quality of tonight's opponents Manchester United.
Victory would move Albion level on points with United but, while Irvine believes they are in transition, he is wary of their threat.
He said: "They are still Manchester United and have some great players. It's going to be a huge game for our club, players and fans.
"When the fixtures come out most people up and down the country look to see when they are playing Manchester United at home.
"They have been a fantastic team over the years but the squad was looking like it was going to need some changes and I read something from Sir Alex Ferguson saying it has needed an overhaul.
"It was getting to that time and David Moyes inherited that situation. It's a period of transition.
"Manchester United have been dominant for many years so they are eventually going to have to change and that's the situation they are in at the moment.''
