I read that why Canelo give Munguia the chance and not Benavidez is that Jaime is respectful to Canelo as compare to the Benavidez who really attack hm personally. They now even joke that the next time they see or negotiate with Canelo, they will bring him flowers. So that is another attack so now sure if Canelo will give what they deserve.
Munguia being Mexican said that one of his idol is Canelo. But don't get him wrong though, he will do his best when him and Canelo face in the ring this Cinco De Mayo weekend.