Rangers midfielder Paul Nsio has joined St Mirren on a season-long loan, with Buddies manager Craig McLeish saying the 20-year-old brings the "calibre, physical attributes and athleticism" lacking in their own academy at present. London-born Nsio spent last season on loan to Raith Rovers and helped the Kirkcaldy side win the Challenge Cup in April, making 31 appearances and being voted the club's young player of the year.