Canelo don't need a new trainer. His skill set is obviously superb. He just needs a new conditioning coach. Theres no excuse now. It should be done first thing tomorrow morning. He needs to hire the best. All the boxing skill in the world don't mean shyt if you can't stay sharp for a full round.
My recommendation of a black trainer has to do with his career at 160 going forward, to fully maximize his abilities.
A conditioner would help as well.
Let's be real, he's finally fighting at his real weight class. He's fighting at the top level where knockouts don't often happen. These guys will be able to take his power.
You want to fight like a black fighter, get a black trainer.