The 29-year-old has been one of the standout stars in Ligue 1 this season with 17 goals and five assists in 32 appearances.
Several clubs in Europe, including Chelsea, Liverpool and AC Milan are reportedly keen on Ben Arfa, whose contract expires this summer, while Rivere admits he would be happy to see the midfielder join the Spanish champions.
“I would be very happy for him and for Nice if this move comes off,” Rivère told France 3. “You do not reject Barcelona, but it is up to him to decide. If I was a player and Barcelona was offered to me I would not ask questions, I would go! But it is not yet done according to what I am told.”