On your first point, the undisclosed fee might indeed suggest that we had a sell on clause!!
On your second point, I wholeheartedly agree. He had plenty of talent but arrived when we were in turmoil off the pitch and was never given a proper chance. I've read all sorts of rumours about his time here, but his injury away at some lower league club (midweek night game?) was exactly what he didn't need at that time.