With the Cards firmly competing so far, I wonder if they hold onto May at the deadline. I would not be opposed to offering him a contract extension. If you take out his first 2 starts, he has a 2.89 ERA and 2.86 FIP. He has pitched well and seems like a dependable mid rotation guy at least.
He is only 28 years old and offering him a 4 year deal for example would still only be in his prime. He has injury risk, but also the inverse is that he doesn’t have as many innings on his arm already that may wear him out earlier in his career.