Liam Rosenior has left Brighton to join Phillip Cocu's new-look backroom staff at Derby.
The 35-year-old had been working as a coach with the Brighton Under 23s since hanging up his boots just over a year ago.
Rosenior was reportedly wanted by Middlesbrough but now he will take up his first senior coaching role alongside Cocu, who replaced Frank Lampard at Pride Park.
Liam Rosenior has ended his stay at Brighton to take a senior coaching role at Derby County