BERLIN, May 29 (Reuters) - Germany's Economy Minister Karl-Theodor zu Guttenberg said there was no guarantee that there will be an agreement on the future of the Opel unit of General Motors on Friday.
"There are ideas from Magna which are still being discussed with GM and which we are also reviewing. There is no guarantee that we will reach a decision today," Guttenberg told reporters.
(Reporting by Gernot Heller)