A big NO for me. Both for City and for Ilkay's sake.
You wrote the storybook ending. Leave it at that. If it's not working at Barca, he should retire to his boyhood club.
Gundo coming back here would simply upset the applecart.
Rodri, Phil, Kevin and Bernardo. We already have 4 players for the middle. One of whom won't start in the big games.
We have Kova and Nunes as backups. With Grealish as a potential option.
Also, it's a different City from the one he left. Different players have assumed differently roles etc. I don't want Gundogan playing the Nunes role.
But that's just me. This is not exciting News.