Anderlecht sporting director Michael Verschueren believes that signing Samir Nasri was a mistake.
The former Manchester City and Arsenal man did not set the world alight with the Belgian club since his summer arrival.
And Verschueren believes signing the ex-teammate of then manager Vincent Kompany was a bad idea.
"If I had to do it again, would we have signed Samir Nasri? With what we know now, no," he told Proximus.
"We're very worried about Nacer Chadli's calf injury. If we had known about it, we might have acted differently.
"We've been unlucky. We wanted him to play more. You can get injured once, but for a second time, it's not positive.
"Roofe? We looked at his medical history and he never had big problems. We've been unlucky."