Chelsea have completed the transfer of Nemanja Matic from Ligue 1 club Lille, with the Serbian international signing a five-year contract at Stamford Bridge.

The 28-year-old has been one of Europe's most impressive midfielders in recent seasons, and his arrival at Chelsea will be a significant boost to their title hopes this season.

Matic is a hard-working and intelligent player who can operate both on and off the ball, and he is expected to bring plenty of experience and leadership to the Blues' midfield.

The fee paid by Chelsea for Matic is believed to be around £35m, with Lille receiving a cut of the deal as part of a multi-million-pound transfer agreement between the two clubs.

The move also comes after reports that Matic had rejected a new contract offer from Lille, which could have seen him stay at the Stade de France until 2024.

For Matic, it seems like the perfect opportunity to move to a bigger stage and play under Jose Mourinho, who he worked under during his time at Porto.

Chelsea manager Maurizio Sarri was delighted with the signing, saying: "Nemanja is a world-class player and we are very happy to have him join us.

"He is a strong leader and a great addition to our squad."

Overall, the move looks set to be a positive one for both Matic and Chelsea, with the Serbian midfielder set to make an immediate impact on the Premier League.