He said: "I've really enjoyed my rugby at Glasgow and I'm very happy to be staying here. Having been on a sevens contract means I've split my time between the sevens side on the IRB circuit and playing XVs here with the Warriors but my new contract means I can concentrate fully on the XVs aspect of my game. With the recent changes at Glasgow and an encouraging mood in the club for next season, I feel very positive about my rugby here and I'm now looking forward to having what will hopefully be a successful season with Glasgow."
Warriors head coach Sean Lineen, said: "Colin has worked hard and demonstrated to us that he really deserves this contract. He's a very skilful player and a good runner and passer and I think his background in sevens has gone a long way to developing those skills.
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