Watford can make an instant profit from the Bosman signing Pape Gueye.
The Hornets insist they have a watertight pre-contract agreement with the Le Havre midfielder, who is reluctant to move to England.
Instead, Le 10 Sport says Watford could agree to release Gueye for a cash sale.
Olympique Marseille are keen and willing to cough up €3m for Watford to release the midfielder from their contract.
Nantes, Angers and Strasbourg are also keen on Gueye this summer.
