Frank de Boer's twin brother Ronald has criticised Crystal Palace for making the 'ridiculous' decision to sack the former Ajax manager last month.
De Boer was axed after only four Premier League games in charge of the Eagles, after losing all four without scoring a single goal.
His brother Ronald has spoken out against the club's decision, as they still sit bottom of the league standings under the guidance of new manager Roy Hodgson, having lost another three consecutive league games.
He told BeInSport: "It hurts, definitely. He's a winner and he worked so hard at Crystal Palace to get it going. Finally, when he thought there was a light at the end of the tunnel he got sacked so that hurts even more.
"He has to stand up again. He's still hungry to coach another team, but for sure it was a knock down.
"We just started, that's why it's so ridiculous [to be sacked] after just four games. They played a good game against Burnley.
"You thought they'd begun to understand a little bit the philosophy, the way. It takes time.
"When you put someone in charge like my brother, you have to speak to him before. Have you thought about his ideas? How, after four games can you not believe in him anymore? That's strange.
"That's football nowadays. Too much pressure, too much money, it makes people make strange choices."