Giannakopoulos - Bolton
Okocha gets the majority of coverage for his time at Bolton, and understandably so because he was one of the PL greatest entertainers, but I always felt Giannakopoulos was the more consistent performer throughout his stay up north out of the two signings and was usually amongst their more influential figures alongside Nolan and Campo.
Another left-field choice here would be Edgar Davids to Barcelona on loan.
Seen as surplus for requirements at Italian side Juventus,with some reports highlighting his supposed decline, he moved to Barcelona in the January 2004 transfer window ,on loan and without much fanfare, to join up with his fellow country man Frank Rijkaard, who was struggling to get the best out of this talented yet annoyingly inconsistent mismatched Barca side.
Davids made an instant impact for the Catalan side,who before arriving were languishing in the bottom half of La Liga (15th), where his form and influence in the side propelled them up the table and cemented them into a well deserved 2nd place finish.