Confirming the transfer of Ndong on the official website, Guingamp said: “The En Avant de Guingamp confirms that it has reached an agreement in principle with the English club of Sunderland for the transfer of the international box-box environment Gabonese Didier Ndong.

“Revealed at FC Lorient, the 24-year-old had been transferred to the Premier League for a record amount in the summer of 2016. His final transfer to the En Avant, conditioned to the traditional medical visit, and the formalisation of the agreement with Sunderland, should be formalized next week.

“Until then, Didier will benefit from a specific program of recovery at Pro Park.”