Manchester United boss Louis van Gaal has offered support to Arsenal rival Arsene Wenger.

United travel to Arsenal tomorrow.

Van Gaal said: “I think that he's doing great work.

“When you can, like Sir Alex Ferguson, stay in a club for such a long period of time, you have to be very good, otherwise you shall not succeed.

"So I think Arsene Wenger is one of the best coaches in this world. The same thing with Sir Alex, who I think is the best, because he won the most titles, for example.

“So, it's easy to say that, but with Arsene Wenger, when you are with one club for such a long time and everyone is satisfied – the fans, the board, the players – then you are very good."