This kind of hesitant behavior from Sane, right or wrong, leaves a bad taste in my mouth. I don't want a player here unless he is 100% happy, dedicated, and frankly fucking grateful for being a part of this wonderful club. It doesn't matter if he is potentially a top notch player or not.
If he is willing to stay just because of the money, then I see no reason why his attitude on the pitch and training ground would all the sudden improve. If it does, well then that says a lot about his character, and it's not very flattering.
The desire to win doesn't come from pay checks.