Midfielder Sebastian Larsson joined Blues in August 2006 on an initial season-long loan deal from Arsenal.
However following a string of impressive performances this move was made permanent in January 2007.
Although he is predominantly a midfielder, the Swedish international has also played at full back.
He is recognised for his passing ability and accuracy from free-kicks.
Larsson is a firm favourite with the Blues fans.
He collected no less than five trophies at the 2007/08 End of Season Awards, including Player of the Season, Players' Player of the Season and Goal of Season.