I can't see Adams being in on Helly. He's UFA after next year and then will likely be looking for a long-term, high-money commitment. With Levi looming, I don't think KA will be able to justify paying the price to rent Helly for one year.
Saros/Demko/Vejmelka seem like better candidates for us -- 2-3 years to UFA. So if Levi needs more than a year in Rochester, we're covered until he's ready.........and don't need to pay a premium in BOTH acquisition cost AND money to do so (which is what Helly would be).