Mesmerism and Talisman quest involving a follower

[Mesmerism and Talisman quest involving a follower]

Brilliant! Thanks for your prompt reply.

[Mesmerism and Talisman quest involving a follower]

Hi!

 

Please help to settle a dispute over the rules:

 

Player 1 played the Talisman quest and was supposed to dispose of his follower in order to receive a talisman. He kept playing as normal because he did not have the follower at that time. At some point in the game, Player 1 finished his turn by picking up a follower and technically finished his turn, without disposing of his follower to receive the Talisman.

 

Player 2 started his turn by casting the Mesmerism Spell, enabling him to take the follower that Player 1 previously picked up.

 

As a response to Player 1's spell, Player 2 said that he chooses to dispose of the follower to receive the Talisman.

 

Now, I claim that Player 2 cannot dispose of his follower after Player 1 cast the spell, because it was not his turn and he can either use a counter spell or the amulet to prevent from player 2 to cast the spell on him; player 2 claims that he used his right to dispose of the follower as a response to the spell, enabling him to receive the talisman card.

 

What is the right action here? 

 

Thank you!

 

A confused Player 2