Marat is expecting a Roger-type game and rocketing upward to top in ranking? No way unless his mind is working ie. working against the usual him
Lundgren maybe knows Roger's weakness, actually we also know it to some degree, but I bet he just can do nothing about it. What's more Roger has gone to a new and high level with his mental strength since his split with Lundgren, so Marat should need a not-on Roger to help besides Lundgren if he aims at Roger.
But yes Roger needs a coach...so Roger, find someone that you think suits you well at the right time.