Smith (forearm) is expected to be activated for Tuesday's game against the White Sox, the Boston Globe reports.
Smith has met all his targets while on rehab and is ready to help the major league bullpen. Boston cleared the deck for his return when it optioned Marco Hernandez to Triple-A Pawtucket. Smith is expected to work in a seventh or eighth inning role, but manager John Farrell will be careful in how frequently he's used at the outset.