Isco was in impressive form against his former club Malaga on Sunday night - opening the scoring in the first half before setting up Casemiro in the second as Los Blancos recorded a 2-1 win.
There is still believed to be tension between head coach Zinedine Zidane and Isco following quotes from the attacker while on Spain duty, but the 25-year-old has been a regular in the team in recent weeks.
Casemiro has said that Isco has "always been a really important Real Madrid player", and the Brazilian wants his teammate to stay in the Spanish capital on a long-term basis.
"He's always been a really important Real Madrid player," Casemiro told reporters. "He's fantastic, and let's hope he stays for many years."