He is a FA in a month. DFA at this point costs you nothing. Sox have like 15 guys on the 40 man who are either FAs at the end of the year (Cueto, VV, Abreu, Andrus, Harrison) or easy DFAs (Aybar, Bilous, Crick, Tobias Myers, Severino, Haseley, Payton, I would also consider Mendick, and Stiever). There is not much of a roster crunch currently or in the foreseeable future.