The big lock forward put in another impressive perormance in his final game for the Warriors in the victory over Aironi at Firhill.
Scottish-qualified Tom will now return to his club, Saracens, where he will seek to earn a place in the starting XV.
Although he will no longer be available for selection, Tom’s performances have impressed Sean Lineen so much that he has very much left the door open for the 25-year-old to return in the future.