Huge update on Charlie McAvoy

Under that recovery timeline, the Bruins may not get McAvoy back until December.

McAvoy isn't the only Bruins defenseman who went under the knife Friday. Matt Grzelcyk received a right shoulder open stabilization procedure and is expected to be sidelined for five months, while Mike Reilly's recovery is set to take three months after he underwent a procedure to repair his right ankle tendon and remove bone fragments.