And Dortmund are willing to let him go, with a move to Marseille only a ‘few details’ away from being completed.
Balerdi will join OM on an initial loan deal with the option to buy him for around €15m next year.
Marseille head coach Andre Villas-Boas spotted Balerdi in late 2018 while considering taking over at Boca Juniors.
The Ligue 1 club are on a shoestring budget this summer, despite their qualification to the Champions League.
And the imminent arrival of Balerdi represents the type of low-cost but clever signings they plan this summer.