These are the two best trainers of our era. Wladimir can learn a lot from them. With Banks, he is going to lose again.
I don't think any trainer is going to fundamentally change Wlad at this point. Wlad is a great boxer, but has several flaws. Fury was able to exploit those flaws and earn his victory. Wlad isn't suddenly going to develop an inside game, or body punching, and his stamina certainly isn't going to improve at age 39. My 2 cents. Fury wins again regardless of who's training Wlad.
He needs someone who can instill him some confidence, Atlas is probably a good choice, technically he's not going to change.