I haven't owned verlamder before. And I'd reject this. Rizzo has the potential, he's a nice offering just not for verlamder
So, how many teams? Categories? Keeper league? Dynasty? If its a keeper/dynasty that actually changes the value of the players. This is a more respectable offer, especially if he is in need of a 1B. And since fowler has played well that's appealing. If its a redraft league I am not to confident on the offer
Was helpful you posted the scoring in your league.
Based on the scoring stats I'd do it. Having Verlander for complete games and shutouts would be huge. Fowler especially with the K's kills you. Rizzo is going to be a stud this year, but will K a lot and have a low average.
In a 5x5 format I'm not sure I'd do this but in your league's format I would go for it.
You apparently need Verlander more than Rizzo. If you are telling me you have replacements go for it. What is your complete roster (with bench) and free agents. That would help me even more. I see what I see but its kinda for my brain unorganized.