Per the team, the Bruins have assigned Noel Acciari to Providence. Acciari provided a physical physical presence to the fourth line.
He has recorded two points (both assists) in 12 contests this season.
Presumably, Acciari is in Providence to get back to game speed, as he doesn't need to clear waivers to go up/down.
Once he's ready, you're likely to see Acciari back in the NHL and Beleskey to IR to make a roster spot.