Tottenham Hotspur have expressed an interest in Porto midfielder Sergio Oliveira, according to reports.
The 23-year-old is currently starring for Portugal Under-21s at the European Championships following an impressive season on loan with Pacos de Ferreira.
According to The Metro, Oliveira has caught the eye of Spurs manager Mauricio Pochettino, and as a result the club will be stepping up their interest in the midfielder.
Oliveira scored two goals for Pacos de Ferreira, who finished eighth in the 2014-15 Primeira Liga season.