The short answer

Apparently Clint Rickards lawyer* asked the jury what Clint Rickards motive in raping this young woman could be.

Possibly because he's an abusive misogynist rapist, who got off on being able to abuse his power without consequence and who thinks he's entitled to women's bodies as a matter of course.

* It astonishes me the things the character claims his lawyer can make about Clint Rickards, all things considered - I thought they were regulations about that sort of thing.