Looking at the bridge forum it seems he hasn't been happy since the end of last season there.
Most of them seem to think he is a good player with plenty of talent, doesn't always use it so we have to get the best out of him.
Interesting comment by one guy on there about him playing wide when he started:
"I'm sad to see Greg leave us, it seems like only the other day he was making his early appearances for us as a sub who played out wide. A local lad, I know his parents John and Caroline well. Was a transfer fee involved, or have we lost another of our youth products to an opposing team? He scored some cracking goals especially that one against County"
This is a nice comment as well:
"Without any doubt Gregg was the best. comfortably the classiest player at Celtic when on song,( I agree he's seems to have fell out of favour with JH )
Alty have got a player that will/ can play at a much higher standard,when you see a player shine against a strong City and Utd reserves without any sweat it ,it proved to me that the kid should be playing at a higher standard,good luck to the kid ,seems a nice lad,I will miss him."