Barcelona have reportedly been scouting Porto's Danilo Pereira during the international break with the 26-year-old said to be the club's top midfield target.
According to Mundo Deportivo (via Calciomercato), Blaugrana director of football Robert Fernandez has cast his eye over Pereira and believes he could be a fine addition to the squad.
The Portugal international has a €60 million (£53.6 million) release clause and is also a target for Arsenal, Manchester City and Paris Saint-Germain, the report added.
Pereira joined Porto from Maritimo in July 2015 and has since become a key part of the first team at the Estadio do Dragao.