Yeah we have possibly 3 Top 10 Catchers on the roster all at once.
Trading one to fill a need, even if the return is a worse player, is going to improve the team. The return just needs to be within the same vicinity as the Catcher we are shipping out IMO. Seeing as Jansen only has 2 years of control, he would be my choice to trade because it's only 2 years. Even if he hits 4 WAR each of the next two years it won't really sting us THAT bad with Kirk and Moreno around.
So all that said, Varsho would be close enough for Kirk IMO. I don't think the D-Bags would be that interested though.