Speaking to Ziggo Sport, Netherlands legend Rafael van der Vaart said: "Barcelona can't treat people like that. Frenkie De Jong earns too much?
"First you sign a contract and then you fulfil it or you go on good terms, but not like that. This is mafia and they must be punished."
"The name of Barca has come out of it looking very bad. It is great club and everyone wants to play there.
"But from here on we are judging it in a different way and to me it's a disgrace when you play for them."
Barcelona are doing their best to force to De Jong out of the club this summer in order to get the Dutchman's massive salary off their books.
The La Liga giants reportedly wrote to the 25-year-old last month, threatening 'legal action' if he doesn't go back to his original 2019 Camp Nou contract.
