Shareholders sceptical of Deutsche Bank/Commerzbank tie-up

FRANKFURT (Reuters) - Shareholders and a major union expressed scepticism on Thursday about speculation of a merger between Deutsche Bank and Commerzbank .Talk of a possible merger between Germany's two largest banks has heated up in the past few weeks as both lenders are still struggling to revitalise their performance a decade on from the financial crisis.But Jan Duscheck, head of German union Verdi's banking division, said he did not assume at the moment that a merger of the two banks would..