Article continues below advertisementChristian Brueckner is just days away from his prison release - and an ex-associate is insisting he's the man behind the 2007 disappearance of 3-year-old toddler Madeleine McCann.Brueckner has been named a prime suspect in McCann's infamous missing person case, though he was never formally charged in connection to her kidnapping.While the convicted criminal has been serving a seven-year sentence for raping a 72-year-old woman in Portugal - near where McCann went missing - he is set to be released this week after completing his time behind bars.