That's just fucking stupid.
1. How do you know he hasn't told the club? Don't take what Pep says at face value, we wouldn't tell other clubs Sane has asked to leave because it automatically lowers the value.
2. Why the fuck should he? He signed a 5 year contract, in June 2021 he will have fulfilled the obligations of that contract and is free to do whatever the fuck he wants.
3. Have you ever told your boss you're leaving before you had confirmation of another job offer? Have you bollocks, just because he's a footballer doesn't mean he works in different ways to me, you or any other fucker on here.
Stop being so damn precious, it's a game, Sane is free to do whatever he likes for whatever reason he likes. City were here long before him and will be here long after him.