He's trying to turn him into an older, non-1st round version of Tinordi. Therrien is really a master at yo-yo'ing a player and toying with their confidence. He loves you if you're an NHL longshot with a long ECHL or AHL track record apparently though (DD, Terry). Probably reminds him of his what could have been with his own failed pro career.
Yup, that must be it.