Casemiro has put pen to paper on a new contract with Real Madrid until the summer of 2021.
The 23-year-old joined Los Blancos from Sao Paulo in 2013 and made 13 league appearances for the Spanish club before joining Porto on loan last summer.
The 23-year-old joined Los Blancos from Sao Paulo in 2013 and made 13 league appearances for the Spanish club before joining Porto on loan last summer.