Brian Boyle is my dark horse. He didn't play last season (I didn't check if he gave a reason). Then he was invited to a pro tryout in Pittsburgh and played the whole season. He doesn't play a big role on the ice but considering his health, the fact that he missed a whole year and that he was still willing to play one more season feels like perseverance. But the reason he may not win it this year is probably because he already won it 4 years ago.
Duclair would be my 2nd, mostly because of this quote "Off the ice, Duclair is one of the founding members of the Hockey Diversity Alliance and has headed up the Panthers’ team initiatives including wrapping their sticks in special tape which reads ‘Racism Has No Place in Hockey’ as well as wearing anti-racism t-shirts to games."
That quote is relevant for the King Clancy, not the Masterton.