The Brazil international has long been linked with a move to Camp Nou and is set to fly to Spain for talks with the club in July after the Confederations Cup.
Other clubs, including the likes of Real Madrid and Bayern Munich are said to be monitoring the 21-year-old's situation at the Sao Paulo outfit but Rodrigues says the player is intent on a move to Catalunya.
"Neymar told us that he just wants to sign for Barca," he told SER Esports. "There are other proposals but he has a preference for Barca. There is no official Madrid proposal for Neymar, but we know that this offer will come."
Neymar's contract with the Peixe expires in 2014 and while he has been adamant that he will not leave before then, recent speculation has suggested that he would be open to a summer exit.
Neymar has made over 100 league appearances for the club, scoring more than 50 goals in the process.