Liverpool boss Jurgen Klopp believes Sadio Mane's first-half goal was wrongly ruled out for offside in his side's 1-1 draw at Arsenal.

Mane's effort was flagged for offside when he tapped in the rebound from Roberto Firmino's shot. Klopp said: "I think it was a goal, it should have been a goal. It's a pity that it didn't count, we made a few more mistakes tonight than the ref, but it would have been nice if that goal counted."