On November 1st, the Chelsea club announced that they would extend the

This collaboration began in 2006 when Adidas and Chelsea set up a world record - the world's largest team photo taken by 8000 Chelsea fans.

Since then, Chelsea and Adidas have launched more grassroots football activities.

This includes cooperation with young football clubs in the United States to improve the level of development of American football. The launching of the blue training camp aims to encourage more young people to participate in football. Last year, the event was also launched in Hongkong.

"We are delighted to renew our contract with Adidas until 2018."

Ron Gudy of Chelsea club said: "the cooperation between Chelsea and Adidas has been very successful in the past four years, and both sides have great ambitions to make the cooperation better, so as to open up more market share in Asia and South America."

Herbert Heiner, chief executive of Adidas, also said: "Adidas and Chelsea have a long and glorious history in the field of football. We are delighted to cooperate with the most elite football clubs in Europe, and look forward to the products.

This contract will include more powers and opportunities to ensure that both sides can get more benefits.

Most Chelsea fans are also optimistic about this cooperation. They expect Adidas to have more imagination in the next Jersey design.