The often murky gambling sector of football sponsorship has embroiled Newcastle, Fulham and Sunderland. They have all signed £1million three-year sponsorship contracts with Bet Butler and their software technology partners Worldlink Sport, who are funding the deals. But Worldlink have yet to pay monies due to the clubs last month while consultant Stephen Pearson, the former Premier League commercial chief who brokered the agreements, is taking legal action against Worldlink for non-payment of his fees. The clubs have been told by Worldlink the money is coming. The Football League are due to announce Bet Butler imminently as their new betting partner but that agreement does not directly involve Worldlink.