Barca are favourites for the Brazil international.
"Neymar's a Santos player until 2014 and therefore there is nothing to say," Rosell said.
"As fan, it is clear, he is a different player. A type like Romario, Ronaldinho, Maradona, Messi. In other clubs they might not like so much, but Neymar is a style that pleases the fans of Barca."
Neymar is already regarded as a superstar and is very much a celebrity in his homeland, but Rosell insists that is not the player's fault.
"I've lived in Brazil and that has to be understood within the culture of the Brazilians in Brazil," he said.
"He a is Santos player until 2014 but if one day comes to Europe - Barcelona, Madrid, Munich or Manchester, I have no doubt that he can change and adapt to the local culture. But it is nothing strange if you live there."