Former Premier League title winner Willian is exploring a return to the English top-flight with Everton believed to be among the teams considering a move the forward.
The 36-year-old attacking veteran departed England last summer following the expiration of his contract at Fulham and sealed a deal to join reigning UEFA Conference League champions Olympiacos on a one-year deal.
It had been hoped Willian would bolster the club's attacking ranks but his contract was ended prematurely in December after making only 11 appearances for the club in all competitions.