I don't see anyone who owns Vinny and is in their right mind trading him away for Kovie. HOwever you do have a few factors in your favor if you're trying to pull this trade off:
1) Does your league go by cap hit (which is 7.27 for vinny) or annual salary (10m/yr for vinny). I'm not sure if vinny on your roster at a 10m cap hit is worth it, but if it's 7.2m then it's worth pursuing since Kovie is a 5m/per year hit.
2)Positional league requirements, and if the other GM is overloaded at centre favors you. Also Vinny's average year last year, combined with a slow start this year help. Keep in mind, one 3pt night for Vinny and the other GM will close this deal down, so you better act quick.
Overall I think it's worth a try, but I'd be surprised to see the other GM accepts this deal. The age gap and points gap between the two is so one-sided that this would be robbery for the side getting vinny.
Anyways, I see it's your first post. Good luck and welcome to the boards.
Cheers.