André Villas-Boas. He's won the Europa League (Just as Fergie won the CWC before being appointed. It's a fair comparison to make). He loves racing (Granted Fergie was more equinically inclined in this respect, but it's a fair comparison to make.) We'll get the racing fans to our side, as a bonus.
He sacrificed himself by forcing him team to produce abject results so as to pave the way for his successor Di Matteo to win the CL (this tactic is known as the "Good Manager, Bad Manager Stratagem", as successfully employed by the Benitez-Zidane super tag team. This is similar to the "Good Cop, Bad Cop" ploy, but in AVB and RDM put their own spin on it and went with "Bad Manager, Even Worse Manager" feint, a risky strategy to say the least. But when it works, oh, boy...).
He's still young (40 years old). His win percentage at Spurs is almost as good as Pochettino's (55% vs 55.3%).
His teams play a high-pressing game, and this style is all the rage right now. But he did it before it was cool.
But the most important, the ultimately incontrovertible reason I want him at OT is this one: he has Mancunian blood flowing in his veins (his great grandmother was from Cheadle). I know he has many faults (such as being a mediocre manager), but if we can look at JM's (eye-gouging, doctor-insulting, meltdown-self-inducing) and still hire him, them we can afford the same courtesy to this great man.