Thorgan Hazard has signed for Borussia Monchengladbach from Chelsea on a permanent deal.

Hazard is the younger brother of Eden Hazard.

Hazard joined Chelsea in 2012, but he's since been loaned out to Zulte Waregem and Gladbach.

"Thorgan has already hinted what a huge talent he is in the last few months," sporting director Max Eberl told the club's official website.

"We are delighted that we achieved signing him on a permanent transfer and that he has opted to play for Borussia in the next few years."

Chelsea has a buy-back option on Hazard.

Sergio Busquets and Barcelona have agreed on an extension through 2019.

Busquets will become one of the best-paid players in the squad, only trailing Lionel Messi, Xavi Hernández and Andrés Iniesta.

Negotiations got underway several weeks ago.

Eden Hazard has signed a new contract with Chelsea that runs through 2020.

Hazard, 24, has become one of the Premier League's top players.

Hazard has been linked with clubs including Paris Saint-Germain and Real Madrid in the past.

"I am very happy to sign a new contract with Chelsea," Hazard, who has scored 13 goals in 36 appearances this season, told his club's official website. "Since I came here in 2012 I have always felt good and the club has been very supportive to me.

"The manager has helped me improve a lot, the fans have been fantastic and I have an amazing understanding with my teammates.

"I always try to give pleasure to the supporters with my style of play and it is nice to know they appreciate my work.

"I hope we can repay that support by winning lots of trophies, beginning with the Capital One Cup at Wembley, and after that, we can push hard towards the end of the season."

Marco Reus has signed an extension with Borussia Dortmund through 2019 that removes his release clause.

Reus could previously be acquired this summer for just €25 million with Real Madrid and Barcelona linked to a bid.

Reus said on Facebook that he had made the decision to stay with his hometown club after listening to his heart.

He wrote: "I am very much looking forward to the future at BVB with our outstanding fans backing us. My heart has decided. Let's get it started. We want to achieve a lot of things. Not only this season."

In an interview with Ruhr Nachrichten, Reus added: "When I signed for Dortmund, I said that I want to achieve great things with the club. I have the feeling that it's not over yet, especially given our difficult situation right now.

"I stand by my words. You win and you lose together. It's also a decision for life. That's why it took me so long to decide."

Philippe Coutinho has agreed terms on a new contract to 2020 at Liverpool.

Coutinho joined Liverpool for £8.5 million from Inter two years ago and Brendan Rodgers is bullish on his ability to become a world class midfielder like Luka Modric and Toni Kroos.

“We have seen young Phil come into his own over the last couple of months purely because of the movement up front,” Rodgers said. “He is the type of player who is creative and looks for the last pass but for that you need the movement in front of the ball and people to penetrate in behind. At the beginning of the season we didn’t quite have that in the team so he was having longer on the ball and maybe getting caught on it more.

“But you can see he is in a real good moment. He is playing a lot of games and we are trying to manage him but his performances are at a really high level which is great to see because he’s a little magician with the ball.

“His courage and bravery to get on the ball is fantastic. If he can continue to improve, and there are areas where he can improve like his goalscoring, then he can get into that bracket of being world class.”