The reporter revealed: "Isaac transferred from Newcastle to Liverpool for a total price of 150 million euros. Thanks to FIFA's solidarity and joint training mechanism, since Isaac played for Dortmund during his youth training, the latter will receive a share of up to 1.5 million euros."
Isaac joined Dortmund from his parent team AIK Solna for 8.6 million euros in 2017. Dortmund once rented it out, and then sold it to Real Sociedad for 15 million euros in 2019.