Doku, the Ivory Coast international midfielder who joined Rennes from Ligue 1 club Lens in January 2018, has renewed his contract with the club and added €70 million to its release clause.

The 25-year-old, who made his debut for France at the age of just 16, was previously set to leave the club on a free transfer after his current deal expires this summer. However, he will now stay until June 2024, adding to the club's financial resources.

Doku's addition to the club's squad has been welcomed by fans and supporters alike, who have praised his talent and ability to bring success to the team. The club is currently in the middle of a strong season, sitting second in the Ligue 1 table and having already qualified for the Europa League.

With Doku's extension, Rennes' financial position looks even stronger, as they have secured the services of one of Europe's most talented young talents at a time when clubs are increasingly looking to invest heavily in their youth systems. This could give the club an edge in negotiations with potential new signings, and help them to remain competitive in European football.

Overall, Doku's renewal of his contract is a positive development for both the player and the club, and adds further momentum to Rennes' efforts to continue building towards success.