Doesn't matter which team he supports. I'd fully expect him to pump money into the club. That is the passion I am talking about. How many of the current owners of football teams do you think are actual longterm supporters of the club they own? Abramovich, Henry, Glazer, Mansour? They've been fans of their clubs since their childhood, I take it?
What matters is the desire you show. Jabba has spoken about investment on numerous occasions and, early on, allied himself with a man, Dein, who also talked often about investing in playing squad. I don't expect my players, board members, owners, tea ladies, kit men or whoever else to be a lifelong fan, or even fans of Arsenal. I just expect them to care about winning once they're on board.