The Brazilian has been linked with a move to Portugal since the end of last season.
"Adriano is very happy at Barca and will continue there next season. It was very difficult for him to finally arrive at this club and he will continue here. Furthermore, the relationship with the board is great," the agent told Radio COM.
"As is normal for a player with two years remaining on his contract, Adriano will be negotiating a renewal. But there is no hurry."
"Right now, the player is on vacation and I will be with him in a few days."