He has to make a move, but he also has to take care of the other issues on the team.
You can't carry three catchers and no backup outfielders all year. Francisco can't be a regular, and he and Lind cannot live on the same roster long term. The bench right now has amazingly thin flexibility.
He can add wins in a few places on the roster, but I think Sp makes the most sense, and that's not cheap.