Poitras, still just 21, was viewed by some as the next top-six centerman of the Bruins’ future not too long ago. “I want to see him go up and down and play really good defensively. He’s going to play with a guy like Khus today, who is really good. Sometimes it’s hard to please everyone but he’s another guy who nothing should really change in his game, just because he’s playing with two great players. “But I also think he’s been really good on the power play.