Gareth Bale was a left-back early in his career, but Real Madrid will not shift him back due to the injury to Marcelo.
Marcelo is out indefinitely with a hamstring tear.
"No, Gareth Bale will play forward," said Carlo Ancelotti.
"We knew yesterday," he said. "Fabio Coentrao is ready to come in. He is fresh and hasn't played many games. We will cover the loss well.
"Marcelo and Coentrao have the same job, so nothing really changes."
Via FourFourTwo
