"Can" and MUST!
I'd be fine with overpaying for a controlled pitcher, but with rentals, keep the returns within reason.
I'm not sure what sort of trade value these guys have, but some packaged together might net a nice rental:
Casas, Kelly, Guerrero, Winckowski, Grissom, DHam, Eaton, Sogard
Romero or Arias can be included for a top end rental type, but it better be a good one.
Rule 5's: Sandlin, Jordan, Bleis, Cespedes, Monegro, Mullins, Paez and Castro, ICoffey, Drohan, Hickey, Rosier, Uberstine