Brand CEO Brandstaetter to join management board - sources Supervisory board to meet on Thursday HAMBURG, Dec 6 (Reuters) - Volkswagen CEO Herbert Diess will likely stay on to lead Europe's largest carmaker as part of a solution that will see him cede some responsibilities following a clash with labour leaders, two people familiar with the matter said. The solution would potentially end the carmaker's latest leadership tussle, which has caused uncertainty among investors and led the group's preferred shares to fall significantly in recent weeks. After protracted negotiations led by Volkswagen Supervisory Board Chairman Hans Dieter Poetsch, a way...