2. Frank de Boer
Club: Crystal Palace
Win percentage: 0%
A brief, unsuccessful spell with Inter may have followed it, but Frank de Boer’s success with Ajax was enough to prompt Crystal Palace to put him in the Selhurst Park dugout at the start of the 2017/18 season.
However, things could not have gone more wrong. The Dutchman fell to defeat in each of his four Premier League games with the Eagles without scoring a single goal.