Werder Bremen president Jurgen Born insisted on Wednesday Brazilian playmaker Diego will only depart the club over his 'dead body'. "If somebody wants to buy Diego, he must murder me first. Diego will leave Werder only over my dead body," Born was quoted as saying by German daily Bild. "Diego is not for sale. He has a contract with us until 2011 and is the most important player in our team." The 23-year-old is the subject of interest from several European clubs, including the likes of Juventus, Chelsea and Real Madrid. Real were reportedly leading the chase for Diego, but Born firmly denied that the Spanish champions are interested in signing the gifted playmaker. "No one has ringed me from Madrid - neither regarding Diego nor any other Werder players." Diego joined Bremen from Portuguese giants Porto in the summer of 2006.