Possibly, they could do something where a protégé of his gets in over their head, or goes missing with whomever they were protecting, and Butler's character has to go save them.
"There is still hope." - Arwen, LotR "No man controls my destiny. Especially not one who attacks downwind and stinks of garlic." - Azim, ROBIN HOOD "Do you stop believing in the moon just because the sun comes out?" - Jack Frost, RISE OF THE GUARDIANS "I am no man." - Eowyn, LotR