Justin Kluivert is being linked with a move to Manchester United this summer.
But Dad told Cadena SER: “He (Justin Kluivert) is doing things really well and the most important thing is that he continues like so. I have told him that he is 18 and he has to be calm and make himself stronger, [and] that he stays for a year or more at Ajax. He should not leave his country soon. It's difficult to say no to Barca, but also to other big teams.
“He should choose the team that responds most to his play and not to the one that pays him more money. I see my son more in the Spanish league, he will choose his future with his heart but he has to have his head and feet on the ground."