Allegedly Rosell said that Pep didn't visit Tito in NYC much, to which Pep publicly replied that he was disappointed by Rosell's poor taste in using that situation to criticize him.
"Allegedly". The timing of Pep's rant (minutes before he announced his intention of signing Barca's best youngster) was very suspect to me. And the fact that the reporter who asked that question had a moment together with Manel Estiarte moments before the press-conference certainly doesn't help either.
Furthermore, that Odilio-rumour was launched in the Brazilian press (globoesporte?), not by the Catalan media, so I find it very hard to believe that Rosell would have any influence in a very reliable press-agency like globoesporte. So there's no proof whatsoever that it's Rosell who launched that rumour.
And yes, Tito responded in a press-conference and he bashed Pep. Why? 1) Because his feelings were deeply hurt because of Pep not visiting him in New York, and he wanted to publicly deny that Pep is some kind of saint or because 2) Tito is Rosell's puppet, and he wants to do everything to make Rosell look good?
Sorry, but imho option 1 looks far more likely.