Rangers could face a re-match with Progres Niederkorn as Celtic, Aberdeen and Kilmarnock also discover their potential European opponents ahead of Tuesday's draws.
Chairman Stewart Milne says changing from a public limited company could unlock £2m of investment in the club.
Aberdeen sign striker Curtis Main on a two-year contract after the 26-year-old leaves Premiership rivals Motherwell.
Winger Ryan Hedges rejects a contract with Barnsley to join Aberdeen as centre-half Ash Taylor returns to Pittodrie from Northampton Town.
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Greg Stewart scored goals on loan to Kilmarnock and Aberdeen before winning a move to Rangers after leaving Birmingham City.
How does the Scottish Premiership table now compare to this stage last season and how much can it tell us about how the season might finish?