Frank de Boer’s agent, Guido Albers, has revealed what the manager lacked at the likes of Crystal Palace and Inter Milan.

The Dutch coach recently decided to step back from the managerial game after being sacked by the Netherlands in the summer.

He was removed from his position after a disappointing summer for the nation in which they were knocked out of the European Championship at the round of 16 courtesy of a surprise defeat to Czech Republic.

That sacking was the latest in a growing list of managerial failures for De Boer, who has similarly struggled at Atlanta United, Crystal Palace and Inter Milan over the last decade.

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His time at Crystal Palace was a particularly poor one, with him managing just five games at the club between July 2017 and September 2017 before being removed from his position.

And his agent believes it is an inability to deal with a larger group of players that has led to struggles for his client.

“I have spoken to enough players of the Dutch national team and received zero complaints about the training,” he told Het Parool’s Branie podcast, relayed by Voetbal Zone.

“But what Frank lacks in, and that comes up more and more often, is managing a whole group. As a trainer, you have control over fifty men these days.

“Everyone is being very dramatic about the EC, but in my opinion, he just won the three group matches.

“We are all acting as if those opponents were useless, but somewhere the system, whether you agree with it or not, did work in the end. Only, the vibe around Frank was, of course, very bad.”