The Arsenal boss is ranked high up and surpasses the likes of Brian Clough and Sir Bobby Robson.
Manchester United‘s legendary gaffer Sir Alex Ferguson also makes the cut but is not in first place.
The list takes into account the managers who had the longest tenures overall in England, Spain, Germany, Italy and France’s top tier.
Who had the biggest stint? Which Premier League and First Division greats make the top 20?
Check out our gallery above for more.