Yeah I suppose.
I mean they don't really need one right now, not with the way Strip is pitching. But another starter goes down and I don't see any good long term replacement in Buffalo right now. Lawrence, Kay, Hatch and Francis on the 40 man, I'd rather see Castillo if that scenario pops up but he's pretty young, just got to AAA and isn't on the 40 man.
Of course, If Ryu is toast for the rest of his contract (TJS) then I hope the Jays go big game hunting for another high end starter with some control left. Someone like Mahle or Castillo.