Lukaku will relish Man Utd challenge - Martinez Unknown 04:29 The striker has struggled in recent weeks, but has been backed to overcome the doubters and prove his worth at Old Trafford Share this Share on FacebookTweet on TwitterPlus on Google+ Related PostsGuardiola Hails 'Legend' Aguero After Four-goal ShowWenger Fears Arsenal's Top Four Chances Are in PerilAkhil Kumar Delivers Early Knockout Blow to Win 2nd Pro BoutChelsea Slump Not All My Fault, Insists Under-pressure ConteBayern Extend Lead As Marco Reus Makes Winning Return for DortmundFed Cup: Venus Williams and Vandeweghe put US up 2-0
