By John Cross Eric Bailly says he has become the victim of a sickening campaign of threats, violence and even a curse. Former Manchester United star Bailly has been sent a string of WhatsApp messages by an agent who claims he is owed money from the deal which took the defender to Turkish club Besiktas in September. The agent sent a message to Bailly during Besiktas’s 3-1 defeat to Fenerbahce on Saturday night, promising to put a curse on him. Then immediately afterwards, Bailly was penalised for handball and conceded a penalty and the agent sent another message which read: “I am happy to see w…