Weeks before his death in 2005, George Best insisted that people remember him for his football skills and “forget all the rubbish” that made him infamous. A new documentary about his life makes that seem unlikely. Best opens with ex-wife Angie recalling the time she mistook her husband for a tramp, setting up the story of a prodigious talent prone to self-sabotage. But the foreshadowing proves unnecessary. Even during Best’s ascent at Manchester United in the 1960s – becoming football’s first pop star at 19 – reporters keep asking if all the attention and pressure will become unbearable. As it inevitably does, the film maps out that downward spiral effectively.