The Dutch international has established himself as a key figure in the La Blaugrana midfield following his 2019 move from Eredivisie giants Ajax.
His eye-catching performances have been flagged up as a key indicator of his possible future value to the Catalans with an estimated figure of €138m.
According to a survey from football transfer experts CIES, as reported via Mundo Deportivo, De Jong’s fee noted his current value and his estimated future price based on performance arc.
Barcelona teammate Pedri is just behind him in the list, in 7th place, with a predicted value of €133m.
Los Blancos forward Vinicius Junior is the fourth La Liga player on the list, in 18th, with a value of €104m.