Thiago Silva is moving to Fluminense on a two-year deal.
The veteran is leaving Chelsea for Flu at the end of this season.
The 38 year-old stopper will sign a contract with Flu to 2026, so he will play to 41 years of age.
It was with Flu where Thiago Silva began his pro career back in 1998.
Chelsea have confirmed he will be allowed to train with Flu before his Blues deal expires on June 30.