I didn't say Hatton turned down 13 million. I said that's what his camp wanted for a fight with Mayweatheror and that would be pricing themselves out. Mayweather is only getting 10million for fighting Oscar De La Hoya. Actually the only guy in boxing right now that could get 13million or more is still Oscar and that's including heavyweights.
I'll dig out the quotes that argue against that. It sounds like the usual boxing/promotion nonsense of one side saying one thing and the other saying another. The truth is probably something very different.
Also Fight Academy claimed that Hatton got £3.5mill for fighting Collazo so I don't know where your figure of only £2mill came from.
Thought it was £1.75million - just under $3.5million.