By Nathan Ridley Wayne Rooney says a “painful back injury” suffered during a family holiday prevented him from making his debut on Match of the Day this Saturday. The former Manchester United and England captain, 38, had been lined up to appear alongside Gary Lineker on the iconic BBC show but was forced to pull out. Saturday’s programme instead went ahead with host Lineker being joined by Arsenal legend Martin Keown and ex-Manchester City defender Micah Richards. Less than an hour before the show aired, Rooney took to social media platform X to explain that he wouldn’t be appearing as an MOTD…