Alex Ferguson through the Manchester United years - picture special

Sir Alex Ferguson has become the longest-serving manager in the history of Manchester United after passing Sir Matt Busby's stint of 24 years, one month and 14 days. To mark the occasion, Sportsmail illustrates his reign with a photograph of the legend from every year in charge.Top row: 1986, 1987, 1988, 1989, 1990; second row: 1991, 1992, 1993, 1994, 1995; third row: 1996, 1997, 1998, 1999, 2000; fourth row: 2001, 2002, 2003, 2004, 2005; bottom row: 2006, 2007, 2008, 2009, 2010  Sir Matt Busby: Tribute to the original master of Manchester United MANCHESTER UNITED FC

Source: Daily_Mail