McMahon (thumb) is likely to be activated from the injured list Tuesday, per Meredith Marakovits of YES Network.
McMahon expects to return to the big-league club just 11 days after being sidelined by a thumb sprain. The 31-year-old is slashing .216/.282/.367 with 10 home runs and 32 RBI over 306 plate appearances this season. With rosters expanding Sept. 1, McMahon should be able to rejoin the big-league club with no corresponding move.