By Can Sezer and Orhan Coskun ISTANBUL/LONDON (Reuters) -The deal between Moscow and Kyiv to unblock Ukrainian grain exports may offer a way forward to a possible ceasefire in the five-month conflict, said former German chancellor Gerhard Schroeder, a friend of Russian President Vladimir Putin. The first grain-carrying ship to leave Ukrainian ports in wartime safely anchored off Turkey’s coast on Tuesday and is due to be inspected on Wednesday. “The good news is that the Kremlin wants a negotiated solution,” Schroeder told Stern weekly and broadcasters RTL/ntv on Wednesday, adding he had met P…