The Die Welt paper, citing a source in the Austrian-Canadian components producer Magna, said that the new owners of GM Opel plan to cut some 4,500 jobs at the carmaker German plants. Initially some 11,600 workers were expected to lose their jobs across Europe including 3,000 in Germany. However, no concrete figures have yet been announced. Mr Harald Lieske union head at the Eisenach plant said "Magna has…