Manchester United boss Louis van Gaal was full of praise for Arsenal ahead of this weekend's clash at the Emirates Stadium.
The Gunners suffered a surprise home defeat in mid-week against Olympiakos but the Dutchman believes they are still the best technical team in the English Premier League.
"I think Arsenal are one of the best teams in the league, in a technical and tactical sense - maybe the best," van Gaal told MUTV.
"I like the way they play. Nevertheless, they haven't won so much so you have to look for that improvement with their team. But I'm not their manager so I don't have to do that!
"We played a very lucky game at the Emirates last season. I believe Arsenal were better, but we were better in the game in the FA Cup and we lost.
"That's football. You can lose even when you are the better team. We also drew at home so that shows that we are equal more or less. Arsenal is a very good team with individual players from a high level, I think.
"I don't know [how they will respond to the mid-week defeat] of course because I am not there, I am here! I think Arsenal can come back from a defeat. They have shown that a lot of times."