(Photo by Catherine Ivill, Ryan Pierse/Getty Images)Manchester United and Chelsea have both registered interest in Brentford striker Igor Thiago, but their plans have been immediately complicated by the Bees’ refusal to negotiate. The Brazilian scored 22 Premier League goals last season and would offer both clubs a powerful, proven option through the middle. Brentford have firm stance on Igor ThiagoAccording to TEAMtalk, Manchester United, Chelsea and Tottenham have all registered their interest through intermediaries, while Bayern Munich are also closely monitoring Thiago. Both Man United & Chelsea need a strikerThiago would certainly improve both teams. United have other positions requiring investment, while Chelsea have already committed heavily during another active window.