I stay with the team first and foremost, however, that doesn't mean you can't like players in other uniforms. There are plenty of players that either played for my favorite team, or hadn't, that I actually like way more than any player on my favorite team, but my allegiance is always with the Bucs.
IE: Chris Johnson. There's not one player on the Buc's roster (aside from Barber, who wont be here much longer anyway) that I like as much as I like Chris Johnson. But if they Bucs are playing the Titans, I want Chris Johnson to have the worst game of his life.