The 29-year-old is currently a bit-part player at the Primera Division club, but even if he were to break into the first team on a regular basis, he does not expect to hear from Germany coach Joachim Low. In fact, he has not heard a word from Low "in almost a year."
"Realistically, I have got to accept that I am not going to be there (at the World Cup)," he told Kicker magazine. "I have not had any contact with Jogi Low in almost a year. Even towards the end of last season when I played in some of the top games for my club, there was no contact. And the national team coach never really tried to come and see me live."
Nevertheless, Metzelder still believes he made the right choice in leaving Germany to join the Spanish giants. He said: "It was the right step. I have enjoyed training at the highest level every day and you don't get that at hardly any other club in the world."
Metzelder ruled out a return to the Bundesliga despite there being interest this winter, although he is likely to return to his homeland next summer.
"Even if something were to drastically change with my sporting situation, I will end my adventure in Madrid," he revealed.
Metzelder will be out of contract in the summer and free to join any club on a free transfer.