Borussia Dortmund manager Peter Bosz claims Pierre-Emerick Aubameyang "has the quality" to play for Real Madrid, but remains hopeful the Gabon international can continue at the Signal Iduna Park.
The 28-year-old was given an opportunity to leave the Bundesliga outfit in the summer transfer window. However, no club came in with a concrete offer and Dortmund decided to keep the striker at the club.
Aubameyang, who joined the German side from Saint-Etienne in 2013, has been reprimanded on more than one occasion for poor conduct. Dortmund face Real in the last Champions League group stage fixture on Wednesday.
A Bild report claims the clash against Zinedine Zidane's side will be an audition for the former AC Milan striker to impress Real. The attacker is looking to leave his current employers in January, with Premier League winners Chelsea, along with Merseyside clubs Liverpool and Everton, also interested in his services.
"He is a terrible player, very bad, not worth it for Real Madrid. It's a joke. I'm telling you that so he stays with us. He is excellent and has the quality to play for Real Madrid but I hope he stays here," Bosz was quoted as saying by Goal.com.
Earlier in September, Aubameyang admitted that he no longer dreams of completing a switch to Santiago Bernabeu after Real decided against making an approach in the summer.
"I have no more dreams. I shall no longer speak of Madrid, I have made it. I am very good at Dortmund. I feel that the clubs do not dare to come too close to take me. Maybe they do not want me anymore," Aubameyang told RMC.
"People who underestimate me, I will continue to prove to them what I can do, where I am. I am inevitably frustrated, we had agreed with Dortmund. I had to leave this season, it did not happen.
"There is disappointment, but whatever happens, I'm happy to stay because I feel good here. It's not a problem, we're going to work hard here."
The Dortmund star's decision to end his dreams of making a switch to Real will come as a welcome boost for the Premier League clubs. The west London club, along with Jurgen Klopp's side and Everton, could push for a move to sign him in January.
Meanwhile, Bosz's side are already out of the Champions League as they sit third in the table with two points after five matches. Dortmund are level on points with Apoel FC, who are fourth in the group table. A defeat for the Cyprus outfit at the hands of Tottenham Hotspur is sufficient for Dortmund to qualify for the Europa League knockout stages.