Sunderland midfielder Jack Colback says Arsenal are the best team they've faced this season.

Colback explained that despite featuring against other top sides, it was the expanse and speed of Arsenal's play that was a real eye-opener.

"Obviously we played Chelsea at home but I don't think they move it around as quick as Arsenal," he told after yesterday's 2-1 reverse.

"They make the pitch really big and they're constantly rotating so you don't really get a chance to have a breather.

"But while it's hard work and tough, these are the games you want to play in and it's great experience for me to play and start the game."