Real Madrid management are following closely Casemiro's impact at Porto.

The Brazilian is on-loan at Porto this season and such has been his form that he's been linked with a return to Real as early as January.

Those reports have been denied by Porto coach Julen Lopetegui, but Real are delighted with Casemiro's progress, says AS.

Should Sami Khedira move on in 2015, many inside Real believe their best option to replace him is represented by Casemiro.