The 20-year-old has signed a four-year contract with the Spanish giants.
Feghouli was expected to leave Grenoble, following their relegation out of Ligue 1 this season.
The 20-year-old has signed a four-year contract with the Spanish giants.
Feghouli was expected to leave Grenoble, following their relegation out of Ligue 1 this season.
