Becoming a Premier League manager is hard enough. Staying employed as a Premier League manager would appear to be even harder - particularly given the financial firepower now at the disposal of clubs up and down the country.
Longevity and loyalty may be heading out of fashion, but it hasn't always been that way. Here, we take a look at ten Premier League managers who stood the test to time to earn a spot among the longest serving top flight managers.
Having put Ipswich Town on the map in the late 1970s and early 1980s, Robson managed England at two World Cups and coached European giants like PSV Eindhoven, Porto, Sporting CP and Barcelona throughout the 1990s.