The Rev. Peter M. Donohue wants to make one thing clear: He is not much of a basketball fan. Sure, he might go to a Los Angeles Lakers game when he’s on the West Coast. But only if his staff tells him it’s necessary for building alumni or donor relationships. Donohue is, however, a Villanova basketball fan. It’s hard not to be one when you are the president of the university, and you go to every home game, and you have a very visible seat near half court, and the students have a set cheer when they spot Father Peter. And it’s impossible not to be one when your Wildcats have just won a national championship and given the Catholic university in the suburbs of Philadelphia priceless publicity.