Gabriel Heinze is set to become Marseille's 10th signing of the summer.
The French club released a statement which revealed they have reached an agreement with the defender and his club Real Madrid over his transfer to the Stade Velodrome.
The 31-year-old former Manchester United player should sign a three-year deal.
The statement read: 'The Argentina international should come to Marseille soon for the completion of the contract and to take a medical.'
On Tuesday, former Spain striker Fernando Morientes, who was a free agent after leaving Valencia at the end of last season, joined the Mediterranean side along with classy midfielder Fabrice Abriel, who moved from Lorient.
The other players to have made the switch to the Velodrome in the close season are Lucho Gonzalez, Stephane M'Bia, Souleymane Diawara, Edouard Cisse, Cyril Rool, Elinton Andrade and Charley Fomen.