He definitely lost interest, he’s not been seen in the U.K. for over 2 years, since his visa wasn’t renewed.
I think the Visa thing put the tin hat on it, even before that he didn't seem the same.
I think he wanted to establish a dynasty, an unbeatable team akin to Madrid or Barcelona, but other teams wouldn't lie down, especially utd.
Once city entered the fray and could happily outbid Chelsea, he just shrugged his shoulders and thought **** it.
Similar to PSG, I wonder how long their owners will carry on splurging to win a farmers league at a canter but get knocked out of the champions league year on year.