The midfielder/forward's added his wealth of experience to the crucial run-in period after joining us on loan from Monaco in January, 2010 before moving to Stoke City, Fulham and now AEK Athens.
It meant a return to the Premier League for the Icelandic international, who had previously spent six years at London rivals Chelsea.
Eidur started only four games in a total of 14 appearances in all competitions but scored one of the goals of the season in a key win at Stoke in March.
He made his name in world football at Stamford Bridge, where he was twice an English title winner.
He made 263 appearances for the Blues following his arrival from Bolton Wanderers in July 2000, scoring 78 goals, also gaining a League Cup winners' medal in 2005.
In June 2006, Eidur called time on his Chelsea career when he made a switch to Spanish giants Barcelona.
The success continued at the Nou Camp, as the cultured attacker scored 19 goals in 112 appearances and lifted the La Liga title in his third and final season at the Club, in which Barca also became champions of Europe.
But as first team opportunities became limited in Pep Guardiola's star-studded squad, Eidur made a move to the French league with AS Monaco in August, 2009.
However, after 11 appearances at the Monte Carlo club, Eidur jumped at the chance of a return to his beloved England when he was offered a loan deal midway through the current season.
Eidur first arrived on these shores in August 1998 when he joined then Championship club Bolton Wanderers.
He scored 23 goals in 76 appearances at the Reebok, thus earning his big move to Chelsea.
Prior to these days, Eidur plied his trade in his homeland, first with Valur and later KR Reykjavik, making his professional debut against Keflavik in May, 1994.
He also spent four years at Dutch giants PSV Eindhoven in his early career, but made only 13 appearances, scoring three goals, during this time.
Something of a legend in his homeland, Eidur has over 60 caps for Iceland and has captained his national side.