Former Manchester United first-team coach Rene Meulensteen believed the club "missed a trick" by failing to appoint either Jurgen Klopp or Pep Guardiola as Sir Alex Ferguson's successor.
After 27 years in charge at Old Trafford, Ferguson retired at the end of the 2012/13 season, bringing an end to the most successful period in the club's rich and colourful history.
United, of course, turned to then-Everton manager David Moyes to replace his fellow countryman, with the Scot seen as the ideal candidate to succeed Ferguson following his impressive work at Goodison Park in the years prior. However, Moyes' tenure lasted less than a year, meaning United were soon on the hunt for a new boss ahead of the start of the 2013/14 season.