Apple occasionally surprise us with new developments. It only seems like 5 minutes ago that Apple producing films would have been unthinkable.
But every time Apple does something unexpected, they're either following a general tech company trend or its a logical next step given their current interest. Buying a sports club would be leftfield to say the least, and wouldn't support their overall strategy in any way I can tell. If they bought the Premier League TV rights, that would make sense, they could use them to drive Apple+ subscriptions. I could even imagine them buying MUTV if they were really arsed about content. But buying the club outright? Why? What would that get them that they can't get in a thousand easier ways?
So no, don't believe this whatsoever.