Maybe he doesn't have a passport?

Michael Higdon has decided not to sign a contract with Falkirk and instead join St Mirren. The striker has left the club he's spent the last two years at to move to The Buddies despite the fact that The Bairns are set to embark on a Europa League campaign.

Maybe he gets travelsick. Perhaps he doesn't have a passport? Any other reason why Higdon doesn't fancy staying a Bairn?