A reporter very close to David Sullivan has claimed that 24-year-old West Ham United player could be set to leave this summer. David Sullivan has to back West Ham manager David Moyes in the summer transfer window, if we are to make a genuine push for the top six next season. However, there will be plenty of players leaving this summer as well, as the Hammers try to raise funds for an assault on the transfer market. Konstantinos Mavropanos has already been linked with a summer exit from the London Stadium, and another defender could now be on his way as well. Ben Johnson, 24, will be out of con…