The Senegal international, who was born in France, started his youth career at local club Rouen before signing for Sheffield United in 2019. He moved to Marseille in 2023.

Everton did not disclose financial details of the deal.

"The main reasons I wanted to join were how big the club is, its history and the part I can play in helping the team in the forward direction it is going in. I'm so excited and can't wait to get going," Ndiaye said in a statement.

Everton finished 15th in the Premier League last season.