The European champions Marseille have announced the signing of Chelsea's star midfielder Frenkie de Jong on a lucrative extension. The deal sees the Dutch international extend his contract until the end of the season, with the option for an optional further year.

De Jong, who made his debut for France at Under-17 level in 2016, has been a key player for the Blues since he joined from Ajax in 2018. He has already scored 49 goals in all competitions and is one of the most prolific scorers in the Premier League this season.

The club have confirmed that they will pay him €15 million per season for the next three years, which is a significant increase from his previous fee of €12 million per season. De Jong has been a major influence on the team's success this season, scoring six goals in just four games.

The move comes as a surprise for many, given that Marseilles have struggled to attract top-class players in recent years. However, the Blues' financial situation is now much better, with the club having secured a new stadium and increased investment in youth development.

De Jong's arrival is expected to be a boost for the Blues, who have struggled to find consistent form in their title defence over the past few seasons. With De Jong joining them in January, the team should be well-positioned to challenge for league titles again this season.

Overall, it looks like Marseilles have taken the right decision by signing De Jong. The Dutchman has been a vital part of the team's success this season, and we can expect him to continue making a big impact in the coming months.