Benfica winger Eduardo Salvio is being linked with Everton.
The Argentine's agent Agustin Jimenez claims his client's future is uncertain at this stage.
"At the moment, his future is undecided," Jimenez told O Jogo. "We need to speak with Benfica and to discuss the options.
"There is interest out there this summer from clubs in England and Italy and I believe they have had contact with Benfica."