Sweeney had no doubt, however, about McAvoy's ability to advance from college to the NHL.
"He has the attributes to be able to play an NHL game right now, absolutely," Sweeney said.
McAvoy had 26 points (five goals, 21 assists) in 38 games and was named a Hockey East All-Star for the Terriers, who lost 3-2 in overtime to Minnesota Duluth in the NCAA West Regional final Saturday.
The Bruins will have to weigh the value of working a rookie into their lineup while they attempt to qualify for the playoffs for the first time in three seasons, and completing a year on McAvoy's entry-level contract, against what McAvoy could add to the lineup.
"I don't know if that would necessarily happen either. That's putting the cart before the horse a little bit," Bruins coach Bruce Cassidy said. "But if we're going to play that game, he would have to figure out what works at this level and what doesn't just like he's going to have to figure it out when he goes to Providence. So it would be a lot of the same just against better players in the end. But I don't want to get too far in front of it.
"We've used seven defensemen here over the last eight weeks, they've done a good job for us. So we'd have to see where he fits and go from there."
Sweeney said that BU sophomore forward Jakob Forsbaka-Karlsson, a second-round pick (No. 45) in the 2015 draft, has not made a decision about leaving school yet.