Silva, who joined Everton from CD Alves last year, admits he is frustrated by a lack of regular football at Goodison Park.
“I will consider leaving Everton if I receive assurances of first-team football elsewhere,” he said.
“Everton are a big club but I need playing time and a club that has confidence in me and gives me opportunities.”
Portuguese giants Benfica are reportedly keeping tabs on Silva’s situation at Everton.
