You know why Dana says he offers so many fights to Diaz? Because he has to. The UFC is contractually obligated to offer both Nick and Nate 3 fights per year. If they don't the UFC has to pay them. Its in their contract. Dana making it out like he's doing them favors by offering them fights, lol.
“We’ve been offering Nate Diaz fights for however long,” he said during the latest episode of UFC Unfiltered.
“In his contract - and Nick Diaz’s - I have to give them three fights a year. Per the contract, I need to give them three fights a year. If I fail to give them three fights a year, I have to pay them."
“I have honoured my contract with those guys, they keep turning down the fights, which extends the contracts.
But, we’re working right now to try put together a Georges St-Pierre versus Nate Diaz fight.”
This was from an interview this past May.
https://www.express.co.uk/sport/ufc/957241/Dana-White-Nate-Diaz-Nick-Diaz-Fight-Offers-UFC-News
and the diaz brothers are turning them all down.