Not sure if this is allowed

[MunchkinMan]

Just because a player uses Kneepads Of Allure does not mean that they completely control their helper. Nothing prevents the helper from doing what they can to sabotage the combat, even if they willingly offered to help!

Beyond that, once the combat is transferred, it's no longer the same combat, aside from the same Monster side is being fought. The only player facing the combat is the player it was transferred to, and the original player is no longer in combat, so any helper he may have had is now free to offer to help in the "new" combat.

Third, the Transferral Potion card specifically says the player whose turn it is resumes his turn and may Loot The Room. The rules would say you can't even do that (you faced a Monster in combat, even if it was taken away), so the card gives the player whose turn it is a small concession. Looking for trouble against another Monster would be illegal since a) the rules say you can't do it, b) the Transferral Potion doesn't offer it as a legal play.