Manchester United fan Rory McIlroy appears to be changing his allegiance to bitter rivals

What Rory McIlroy does in his spare time is his business.

But how he has spent his downtime after last week's US Masters may not be very pleasing to his many millions of fans. The Down native is, of course, Manchester United crazy and a regular at Old Trafford. However, this week it appears as he may be switching allegiances, as he got a stadium tour of the Etihad, and even managed to grab a sneaky pic with Sergio Aguero, who was not exactly dressed for the occasion, on Friday afternoon. https://twitter.com/aguerosergiokun/status/720934263550566400 Manchester City fans were as perplexed as anyone. But if that was weird enough, check out Sergio's impression of an Irishman on holidays with his socks and sandals combo. https://twitter.com/stelios_1980/status/720934713645334528 It's believed McIlroy was at the Etihad after a special invitation from the club's Football Academy. He had a busy afternoon too, practicing his swing topless, as you do. https://twitter.com/McIlroyRory/status/720981755885260801