Depends
Ukraine only needs local superiority to use A-10, that's still a possibility especially seeing Russia failed to gain nominal air superiority. You give them enough fighter and enough AA/SAM and they can maintain local air superiority, then they can use A-10.
Bear in mind there are 3 patriot system already going to Ukraine, you need 5 for the entire country, which mean 3 of them couple with NASAM and IRIS-T would be able to provide that (local Air Superiority) if the Ukrainian have their plane number back up and cover the gap.
But then that ultimately the US decision to give them those weapon, I am seeing it, either that or earlier version of Strike Eagle, but probably not this year.