Or they could see him as a waste of time, effort and money to try anything with as he hasn't shown anything much in 5 years.
As far as I am concerned, if you have been to 4-5 training camps and have yet to establish yourself as a NHL pro, then you aren't going to. There are hungrier, younger players coming along who want that job just as much as he does. Your shelf life as a prospect is short regardless of your perceived talent.