co-opt (someone) into (something)
To convince one to take a certain action or position. I think he was beginning to see the benefits of our plan, but we'll never co-opt him into it now that you've insulted him!
co-opt someone into something
to convince someone of a differing view to adopt one's position or philosophy. They tried to co-opt the students into rioting. There is no point in trying to co-opt them into it. They are too clever.