Matt Ritchie tops the list of most expensive Scotland internationals along with Steven Fletcher as both players drop to the English Championship.
Dundee United signed forward Tope Obadeyi from Kilmarnock on an initial one-year deal.
After a disappointing first season, Nadir Ciftci aims to show manager Brendan Rodgers that he has a future at Celtic.
Experienced Motherwell striker Scott McDonald agrees to extend his Fir Park stay for next season.
Audio & Video
Scotland manager Gordon Strachan and Plymouth boss Derek Adams talk to BBC Radio Scotland's Sportsound.
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