Not with this vehicle. Hubble's problems are with failing gyros, crucial to it being able to point at one part of the sky for long periods. I doubt if MEV-3's attitude control is anything like as good. In addition, moving from geosynchronous orbit down to Hubble orbit would take too much fuel, probably more than it has available. Drifting from one part of geosynchronous orbit to another is cheap on fuel.
In any case, Hubble is being superseded (or is that starved) by the James Webb scope. With a communications satellite, there's somebody's profit at stake. Hubble doesn't make a financial profit.