Andy Murray targets Tour return in January for Australian Open

• Scot comes through charity match against Roger Federer
• ‘I thought I did OK. My hip felt pretty good, not perfect, but it’s getting better’Andy Murray, still limping and slyly grimacing as if housing a small pea in a shoe, flexed his working muscles with enough conviction against Roger Federer here on Tuesday night to suggest that a four-month absence from tennis has not impaired his determination to return as soon as he can.Nor has it doused his love of the game,