Though born in France, Diamé represented Senegal at international level and made 31 appearances before retiring from national duty in 2017.

[6] After a full recovery, he signed for lowly Spanish side Linares on 30 July 2007,[7] and moved to Rayo Vallecano the following year,[8] helping the Madrid-based team to a mid-table position in the Segunda División, after being promoted in the 2007–08 season.

During his time with Rayo, it was reported that La Liga clubs Real Madrid and Barcelona were interested in signing the midfielder,[9] as well as Premier League side Arsenal.

[21] In January 2013, after a number of clubs were reported to be interested in signing him, Diamé stated that he wished to stay with West Ham.

[22][23] Diamé did not leave the club in the transfer window, and manager Sam Allardyce stated that it was an important decision.

[26] On 28 May 2016, Diamé scored in the Championship play-off final in a 1–0 win against Sheffield Wednesday, giving Hull an immediate return to the Premier League after their relegation in the 2014–15 season.

[38] He scored his first international goal for Senegal on 26 March 2016 in a 2–0 win against Niger in a 2017 Africa Cup of Nations qualification match.