Manchester United boss Louis van Gaal rates Arsenal a better team than champions Chelsea. United meet Arsenal today.
Van Gaal said: "I have not given the team a winning mentality yet because we are not champions and I think that is a quality of the champions.
"We have improved lot, but we have to learn to do what Chelsea have done in the way they can play and finish the games - that is the big difference now between us and them.
"I think Arsenal maybe have a better team but they cannot finish off opponents like Chelsea. That is also about talent and experience like John Terry and Gary Cahill. That is the difference."