Wilfried Zaha, conversely, is only on a loan deal until the end of the season after struggling to break into the United first team.
It's a shame to see Fabio - who started a Champions League final for us and was rated as the better of the two when he and his twin joined United - leave the club, and a bit strange too. He had looked decent whenever he played, but could barely get a game in an awful Queens Park Rangers side, even on the wing (his most memorable performance for United, of course, was probably when he and his brother played on the flanks to destroy Arsenal.)
With David Moyes seemingly preferring Alexander Buttner as a fullback, the game looked up for Fabio, and it seems he'll go and join Ole Gunnar Solskjaer at Cardiff. He'll have Wilfried Zaha, Mats Daehli, Magnus Eikrem and of course Solskjaer himself for company as current or former United players.