Teenager Mark O'Hara has signed a two-year extension with Kilmarnock.
Relegated Hull have released longest serving players Paul McShane and Liam Rosenior as they reshape their squad.
Crystal Palace have signed French defender Florian Marange on a free transfer from Bordeaux.
The 27-year-old has signed a one-year deal.
Marange joins Stephen Dobbie, Dwight Gayle, Jerome Thomas, Jose Campana, Kevin Phillips, Elliot Grandin and Marouane Chamakh in moving to Selhurst Park this summer as Ian Holloway's men mount a first top-flight campaign in eight years.