Kilmarnock manager Allan Johnston has continued to reshape his squad for the new season by signing Josh Magennis and Tope Obadeyi.
Kilmarnock have signed former £1m-rated central defender Mark Connolly.
Kilmarnock have signed striker Lee Miller on a two-year contract.
Northern Ireland international Sammy Clingan has signed a new 12-month deal with Scottish Premiership side Kilmarnock.
Colchester have completed the signing of defender Sean Clohessy from Scottish Premiership side Kilmarnock.
Kilmarnock have made their second summer signing after landing Paul Cairney on a two-year deal.
Aberdeen manager Derek McInnes admits the club may not be able to tempt striker Kris Boyd to stay in the Scottish Premiership.
Kilmarnock start their Scottish Premiership campaign with an away clash against Dundee.