Arum and Hobson get it on. BBC
"Hatton has been exposed pretty much as being a relatively ordinary fighter based on his last fight," said Arum.
"I don't think he is going to be ready to fight anybody real soon as long as he can grab HBO money to fight second-rate fighters."
Hobson insisted that Hatton was prepared to face anybody but questioned Cotto's credentials.
"Let's be realistic. Castillo - or Corrales if he wins - v Ricky is a bigger fight than Castillo or Corrales v Cotto," said Hobson.
"With the greatest respect to Cotto, he isn't in Ricky's league in terms of international recognition.
"Ricky is a three-time, two division world champion, a Ring magazine champion and the winner of every Fighter of the Year Award going.
"But Cotto is yet to win a genuine world belt. He's still in the kiddie pool with waterwings on. He's at WBO title level and is struggling to keep hold of that.
"Arum can't possibly be serious when he says that Ricky has anything to fear from Cotto."