Fiji international Niko Matawalu has been training at Scotstoun ahead of a potential return to Glasgow Warriors, reported BBC Scotland
The scrum-half is a free agent after leaving Exeter Chiefs and had a light individual training session.
The 28-year-old, who has 32 Fiji caps, left Glasgow in 2015, after helping the club secure its first Pro12 title.
The free-spirited back was released by Exeter this summer after failing to make an appearance.