Hertha Berlin manager Jos Luhukay has urged John Brooks to grow up and become an adult.
The 20-year old German-born American defender was the cause for both Werder Bremen goals prior to his 38th-minute replacement as die Alte Dame managed to fight back for a 3-2 win at the Olympic Stadium on the weekend.
Despite the victory, Luhukay was extremely critical of Brooks who he feels needs to play more like a grown man rather than a kid.
"I don't think he challenged one duel while he was in, (center back partner Fabian) Lustenberger had 15-20 - that's not gonna work," said the Hertha boss.
"People are going to grow from such moments. In the Bundesliga, it's a harsh reality. John started yet another match without enough motivation. He's not active enough, so I have to react. He needs to shake off this youthfulness and become an adult.
"If he has character, he'll learn. This was not the first time. He needs to learn it himself - it can only come from him. Otherwise, this won't be the last time I pull him early."
Brooks has so far made eight Bundesliga appearances this season in his first full campaign with the Hertha senior setup.
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