Hi uanap, welcome to the cafe! So far, Lieberthal looks like he's back at 100%, no mean feat after knee surgery. I like his prospects for this year.
Aside from Big Mo, others coming back from serious injury include Varitek (who may take a bit to return to his old form), Frank Thomas (back and ready to go) and Benson, who will be out for a few more weeks, but would make a nice late sleeper. Nomar and Pedro as well, although they won't be overlooked... Oh yes: Todd Hollandsworth, although his playing time remains a question mark. Jeff Hammonds is back after a shoulderr injury. Barry Larkin returns as well, although he'll again be an injury risk.
Benson seems the most likely of these guys to be completely overlooked - lots of people shy away from players who will begin the season on the DL.