BERLIN: Ex-Chelsea striker Salomon Kalou on Wednesday extended his Hertha Berlin contract, which had been due to expire in June, with reports the new deal runs until 2020. “I feel very comfortable in Berlin and I still have plenty that I want to achieve with Hertha Berlin. I would like to help the team continue to progress as it has in the last few years,” said the 31-year-old Kalou. The Ivory Coast forward joined Hertha for 1.8m euros ($1.9m) from Lille in 2014, who he had joined in 2012 following six years with Chelsea. Hertha has not stipulated how long the new contract is for, but German daily Bild claims it will run for another three years.