Everton are chasing Netherlands defenders Stefan de Vrij and Bruno Martins Indi, according to reports.
The pair starred in the 5-1 thrashing of Spain, with 22-year-old De Vrij the scorer of the crucial third goal.
The Feyernoord pair have been spotted by Roberto Martinez who is working in Brazil for ESPN, according to Dutch newspaper De Telegraaf.
Martins Indi, 22, almost joined Martinez at Goodison Park last summer but a potential move cooled because Leighton Baines was never sold to Manchester United.
Martinez last week signed a new deal, keeping him at the club until 2019.
"I am delighted to have been given the opportunity to make a further commitment to Everton," Martinez said. "I loved my first season at the club. I could not be more proud of the way Everton performed throughout the entire season and the memories we were able to make together.
"I am really excited about next season."
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