Sullivan apologised to Hammers supporters following the 3 - 2 reverse against Premier League champions Leicester City at the London Stadium .
West Ham co-chairman David Sullivan has told manager Slaven Bilic he must find a way to shore up the leaky defence that is causing West Ham woe .
co-chairman apologised to West Ham supporters following the 3 - 2 reverse against Premier League champions Leicester City at the London Stadium .
West Ham co-chairman David Sullivan has told manager Slaven Bilic he must find a way to shore up the leaky defence that is causing West Ham woe .