Nah Harsh but fair, OK he scored a few goals at Celtic, but it was obvious he was a fringe player at best and never held down a regular starting place.
As for the Cardiff move, he knew his time at Celtic was up but I get the impression that he was not overwhelmed with offers from any bigger or better clubs so a struggling Championship club might have been his only realistic option.
Time will tell but for me he's a good above average player but not a great one, his next transfer move will define the direction his career is heading, so let's hope its a good one.