[4] On 29 January 2012, he agreed a deal to join Premier League team Queens Park Rangers on loan for the remainder of the season with a view to a permanent switch in the summer of 2012.

[7] On 27 June 2012, it was announced by Queens Park Rangers that they had completed the permanent signing of Diakité on a four-year deal for an undisclosed fee believed to be £3.5 million.

[11] However, on his full debut against Middlesbrough on 15 February 2014, Diakité was shown a straight red card early in the second half for a two-footed lunge on Dean Whitehead.

[13] He was recalled by Queens Park Rangers at the end of the January transfer window, having made seven appearances and scoring one goal during his time at the Saudi Arabian club.

[15][16] On 24 January 2012, he made his senior international debut for Mali at the 2012 Africa Cup of Nations, in the 1–0 victory against Guinea.