The son of former Barca player and coach Johan Neeskens, Neeskens Jr is playing for CF Damm and expected to join Real at the end of the season.
He revealed: "It might seem strange, but I have appreciated the two clubs. At Barca, I played from three to 11 years of age. Then, too, I was at Espanyol until I got injured and now I'm a ball boy at the Nou Camp.
"But Real Madrid is also the best team in the world and I have great affection for them."