I'd say to let this fight build. Lemieux should have 2 defenses at the very least. If Golovkin fights him too soon, people will just say Lemieux was a bum whose only victory was Quillin's left-overs. Lemieux should defend against Soliman and Heiland. After that, Golovkin would be a mega fight.
Golovkin is Cotto's mandatory, but the WBC has allowed Cotto to pay Golovkin step aside money to fight Alvarez. Golovkin has been promised the winner of that fight, but I don't trust the WBC...............Golovkin is avoided, no doubt about that..............