According to the Blues, the 24-year-old has agreed personal terms with the Blues, and will remain at the German club for the rest of the Bundesliga season.
He will link up with his new team-mates in July, subject to passing a medical examination.
“I am delighted to be signing for Chelsea, it is a very proud moment for me to be joining this great club. I of course want to thank RB Leipzig, the club and the fans, for four fantastic years. You will forever be in my heart. I look forward to next season with my new team-mates, my new manager and of course the Chelsea fans. Together we have a very successful future ahead of us,” he told Chelsea website.
Timo Werner is one of the most feared young strikers in Europe, renowned for his pace, movement, link-up play and finishing ability.
“We are very excited that Timo Werner has chosen to join Chelsea. He is a player who was coveted all over Europe and it is no surprise, he has that rare mix of being young and exciting and yet established and proven. We can’t wait to have Timo on board, but until then we wish him and RB Leipzig all the best for the rest of this season,” Chelsea director, Marina Granovskaia said.