Motherwell hold a two-goal advantage in the Scottish Premiership play-offs after they beat Rangers at Ibrox.
Another director at Dundee United is set to resign, with property surveyor John Bennett stepping down.
Dundee sign Bulgarian defender Kostadin Gadshalov on a new one-year deal, with Stephen McGinn poised to leave.
Brazilian defender Lucas wins a new contract after only two starts with Hamilton Accies since joining in January.
Manager Gary Locke says Mark O'Hara is Kilmarnock's best young talent as the midfielder signs a new contract.
Teenager Mark O'Hara has signed a two-year extension with Kilmarnock.
Celtic striker Leigh Griffiths says he and the club are fully focused on getting through the Champions League play-offs after wrapping up a fourth straight Scottish championship title.