David Sullivan and the rest of the West Ham hierarchy are jeopardising a £50m income stream with their latest initiative. The relationship between the GSB regime and the West Ham faithful has long been frosty. Pre-existing wounds grew even deeper following the move the London Stadium in 2016, with supporters bemoaning a perceived lack of atmosphere in an arena not purpose-built for football. What’s more, Sullivan and Karren Brady, the main decision makers behind the scenes at the club, have broken a promise to pass the savings made via renting the stadium down to fans. And GSB’s latest move in…