No, he's not the answer for several reasons.
He's past it. Not done anything noteworthy (unless you count winning the ECL, which many don't) for about 6 years or more.
He's been sacked from his past 5 jobs. Real, Chelsea, United, Spurs, Roma. Yes he had varying degrees of success at all of those, but ultimately he became more trouble than he was worth every time.
He always wants big backing in the transfer market. New owners or not, PSR means we can't push the boat out like he'll demand. Plus he doesn't work well with DoFs.
He's in his 60s now, which is probably too old. We need someone younger who has it all too prove.
He wouldn't be as charismatic as people are thinking. The last few years he's become a Victor Meldrew-type who bullies his own players and gets himself frequent touchline bans. Fans would quickly get sick of his antics.