Dunno, I'd stick with the trainer who brought me to the dance. We've seen some examples of trainer changes gone wrong like Taylor and Naz. Changing to a world renowned trainer isn't always a guarantee of sucess.
He's already changed trainers once though, he that jelly guy trained him up to the olympics and then went with harrison when he turned pro.
An American trainer presumably means big fights in America as well so could be exciting stuff.
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