That's an amazing year...22 wins in only 28 starts. He walks lots of guys, but K's plenty and throws tons of GB's.
Rosen's ERA will be in the 4.5 range next year, maybe more....pretty safe bet. Is THAT worth $5M to you?
Dresden and Bierbrodt MIGHT be that good. Maybe. And they will be minimum $ guys.
But you just won 101 games. You know that stuff.
I would probably pay the $5M and accept the 4.5 ERA. Could you get somebody that cheap in theFA market? Risky bet.