Rangers General Manager Jon Daniels will be closely watching Red Sox spring training camp to see whether Wes Littleton makes the team.
Having acquired Littleton from the Rangers, the Red Sox must give up an additional player if Littleton lands a spot on the bench.
As part of the deal, the pitching starved Rangers have already acquired minor leaguer Beau Vaughn, who had a combined 2.33 ERA in Double A and Triple A last year.