He does not even come close to Mahrez. Sane could not even make it in a dreadfull german team for the world cup. As we all know, he is a prospect, he has not prved much yet ! Playing in a team full of world class players does not make him a world beater. As much as I like the pace and technicality of Sane, he gives the ball away more often than Mahrez, his first touch is most of the time shocking and he does not defend well. Had Sane played yesterday, we would have had a very reminiscent score of against Liverpool last season.
Treating a city player who has done his atmost to join city and has not spared himself in pursuit for improvement since he joined the team a clown is just disgraceful.