Who does Cael choose to help tweak and prepare him for international competition?

He is head and shoulders above everyone currently wrestling. A training partner is usually someone who is more than just a workout dummy. Where does Cael find this guy?

Can't be Varner as he will have his own partner and be working with him more... as well as working directly with Cael at times so he will get even better. Cael needs his own partner and his family/nepotism won't come to the rescue on this one.

Who does he choose?