Sir Alex Ferguson's footballing legacy is already visible within the sport, as some of the players with whom he won league titles in the 1990s are now top-class managers in their own right.
Former stars Bryan Robson (left), Mark Hughes (top right), Paul Ince and Steve Bruce have all managed in the top flight.
Ferguson's relationships with his fellow Premier League managers have kept many a back page occupied during his tenure.
He and Arsenal's Arsene Wenger (bottom right) do not get on, while Kevin Keegan imploded on air as he declared he would "love it" if Newcastle beat United in 1996.
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