Ross County have signed former St Mirren defender Sean Kelly on a two-year contract ahead of the 2017/18 season.
The 23-year-old, who had a spell on loan at East Stirlingshire during his time with Saints, returns to the SPFL after a year with AFC Wimbledon.
Staggies boss Jim McIntyre said: "Sean is a player I have admired for a number of years now. He is a left-sided player and will add a real presence to our defence."