Manchester United have announced the signing of midfielder Nemanja Matic from Chelsea.
The 28-year-old Serbia international has agreed a three-year contract at Old Trafford and moves for a reported fee of around £40million.
The move reunites Matic with his former Chelsea manager Jose Mourinho, under whom he won a Premier League title in 2015.
Matic told the club's website, www.manutd.com: "I am delighted to have joined Manchester United. To work with Jose Mourinho once again was an opportunity I couldn't turn down.
"I have enjoyed my time at Chelsea and would like to thank the club and the fans for their support. I cannot wait to meet my new team-mates and to start training with them.
"This is a very exciting time for the club and I am looking forward to playing my part in creating more history for this great club."