But after recent displays which suggest he is coming to the boil nicely he put paid to speculation linking him with a move away from the Etihad.
The 22-year-old has, however, played down the reports by stating that a move to Old Trafford in January won't happen because he's now on the right side of the city.
And with five Manchester City different players finding the net against the Saints, the forward insisted Jose Mourinho's side will find it hard to contain their threat at the Etihad next Sunday.More news: PSG's Neymar accuses referee of being "disrespectful" to him
Sane has a contract with City until the summer of 2021, but is now in talks with the Premier League champions over an extension.
United have scored 14 fewer goals than City in the Premier League this season and the addition of Sane would significantly boost their attacking threat, but the Germany global was unequivocal in his response to the suggestion of what would be a controversial move.
After a quiet start to life at the Etihad following his big-money move from Monaco in 2017, Portugal worldwide Bernardo has made himself an integral part of the Man City side, and has comfortably filled in for the injured Kevin de Bruyne this season, scoring five and assisting two goals. "I am really happy here and I'm on the right side!"More news: Angry Anderson's son killed in attack in Sydney's northern beaches
Sane has scored three goals and also created three assists in nine appearances for the Citizens this term, after enduring a low start to the season.
Meanwhile, the 7th-placed Red Devils only just won their latest game against Bournemouth, and have scored just one goal more than they have conceded all season.
"In our team, we have players of good character who always want to win, always hungry, always want to improve, score goals, give assists and have a clean sheet", he continued.More news: US, South Korean marines hold small-scale exercise ahead of North Korea talks
"And we have a coach who keeps telling us we need to improve, improve, make more clean sheets, make fewer mistakes, and be more careful".