Doesn't matter if Sterling didn't touch it,if you make an attempt for the ball it's offside. Personally withe new rule of more leniency for the attacker I think it should of stood .Confused with the offside meself,fodens header wasent a pass too sterlin it was a shot which the keeper saved,and foden put in the rebound,also sterlin wasent encroaching vision from keeper from fodens header ,unless sterlin did get a touch on finnish from foden but pretty sure he didnt on replay ive watched a few times its a strange one