Real Madrid interested in signing Porto midfielder Hector Herrera this summer, according to Sevilla Info.
Herra, who is in Russia with his Mexico national team, only has one year left to run on his current deal.
Real Madrid will be looking to replace Mateo Kovacic ahead of the 2018/19 season.
Herrera joined Porto from Pachuca in 2013 and has made 192 appearances for the Portuguese club in all competitions.
Last season, the midfielder scored five times and contributed seven assists in 42 appearances.