Gary Neville and two other former Manchester United players have laid into reported club target Jerome Boateng.
Boateng has emerged as a possible central defensive signing for United this summer.
The 29-year-old has endured a difficult World Cup however, with Germany losing the first game of their title defence to Mexico.
They scraped past Sweden to keep their hopes alive, but Boateng was sent off in the 82nd minute – ten minutes before Toni Kroos’ last-gasp winner.
Boateng was criticised at half-time by Roy Keane, with Neville joining the party soon after.
“The two centre halves will give you a heart-attack,” Keane told ITV Sport. “Boateng has got to come off. Boateng has been a disgrace.
“He’s been walking around he’s like it’s a game of Sunday league football. He’s been a disgrace, get him off.”
At full-time, and with Boateng having been dismissed, Keane maintained: “They were better off without him.”
Neville backed his former teammate’s views.
“Roy is absolutely right, the centre-backs have been a joke, an absolute joke.
“Boateng thinks for some reason he is (Franz) Beckenbauer, thinks he’s the player. He’s played under Pep and started to believe he is a fantastic football player.
“He has been a joke in this first half. He’s got delusions, thinks he is a player; he’s wandering forward, ambling in the game.
“The performance of the centre backs (was poor), the lack of understanding. I have never seen Germany look so naïve in games. But they got there.
“The Germans are not right, they are not right. The rumours before the game are proving to be true. Something is way wrong.”
Patrice Evra was in complete agreement on Boateng.
“He had a bad game. Sometimes you can see he plays like Beckenbauer, but tonight he had a really bad game. And actually when he was sent off, Germany played better.”