Even if it is true, Thompson fights nothing like Harrison, he's a horrible choice of sparring partner regardless. However, Thompson is a very smart fighter and could easily catch Haye off balance, it's what he does best. If this is true Tony could have two big claims to fame:

1. He's landed the most punches against Wlad of any fighter.

2. He knocked down Haye in sparring.

That's if it's true.

I don't expect any confirmation to come out for this, and either way it doesn't really effect my opinion of the outcome of this fight in the slightest. Running with bears is the decided difference here.