Chelsea v Manchester United: Sir Alex Ferguson wishes referee Lee Mason 'good luck' ahead of League Cup tie Mason has come under criticism from United management before when, in Dec 2010, he allowed a last-minute equaliser from Birmingham City's Lee Bowyer to stand despite a potential handball and offside in the build-up. A visit to Old Trafford in April this year also ended in controversy for Mason when he sent off Queens Park Rangers midfielder Shaun Derry for a foul on United winger Ashley Young. Mason also awarded a penalty when television replays showed Young was offside when he received the ball and went down under little-to-no physical contact from Derry.