Marcelo displays 22-year - old talent in regards to young players . Isco has been in excellent form recently in the attacking Madrid midfield . Real Madrid plays on Barclona in El Clasico on Sunday .
Marcelo praises 22-year-old midfielder in talk to youth players . Isco has been in excellent form recently in the Real Madrid midfield . Real Madrid take on Barclona in El Clasico on Sunday .