City have finally completed the signing of the Algerian international, who arrives from Leicester City, and Sane is in no doubt he will add more quality to Pep Guardiola's squad.
Sane noticed what a quality he possesses when going head-to-head last season, and says he is showing the same class since linking up with City in pre-season.
Despite the fact Mahrez will be in direct competition for a place in the side, the German international, who missed out on the World Cup, is delighted to have him on board.
"I'm happy he's here," said when asked about his new team-mate. "Every time we played Leicester and he had the ball, I was like: 'Okay, please don't do anything creative!'
"I'm really happy that he's now with us as he's a really good football player. You can see it already. He's a really good player and a really good person. I can't tell him that because then he'll be stronger and take my place!"