Saros allowed two goals on 22 shots during Sunday's 2-1 preseason loss to the Lightning.
McAvoy (suspension) logged an even-strength goal on three shots and four PIM in a game-high 28:35 of ice time during Sunday's 3-2 shootout win over the Capitals in preseason play.
DiPietro turned aside 30 of 32 shots during Sunday's 3-2 preseason overtime win over the Capitals.
Saros will protect the road net in Sunday's preseason contest against Tampa Bay.
DiPietro will patrol the home crease in Sunday's preseason matchup against Washington, according to Belle Fraser of the Bruins' official site.
Mutter was placed on waivers by the Bruins on Sunday, per Elliotte Friedman of Sportsnet.
Lohrei and the blue line will be asked to provide more offensive production this season, Joe Haggerty of Boston Sports Journal reports Wednesday.
Head coach Marco Sturm said Wednesday that Hagens seized an opportunity to shine during rookie camp, Joe Haggerty of Boston Sports Journal reports.
General manager Don Sweeney said Wednesday that the team remains in communication with Zacha's representation regarding his future, Joe Haggerty of Boston Sports Journal reports.
Poitras agreed to terms on a one-year, two-way contract with Boston on Wednesday.
