Cole Miller was linked to a fight with Conor McGregor a while back. That fight fell through due to injury, and he hasn't been back in the octagon since. However, he is a UFC veteran whose last appearance in January 2014 earned him a Submission of the Night award. He currently trains with American Top Team. Miller has been open in supporting Punk, and posted this to twitter:
I've trained with @CMPunk he will beat guys in the @ufc. All the haters can suck it.