St Mirren boss Ian Murray has made Burnley defender Luke Conlan his fourth signing of the summer.
The 20-year-old joins Scott Agnew (Dumbarton), Stuart Carswell (Motherwell) and Paul McMullan (Celtic, loan) for the 2015/16 campaign.
Conlan, who has been capped by Northern Ireland at U21 level, could make his debut against Berwick Rangers in the Petrofac Training Cup on Saturday.