Olof Mellberg has admitted that he is keeping his options open over a possible summer transfer after turning down a new deal with Olympiakos.
The Swedish international, who is soon to be out of contract, has been linked with a move to Everton.
"We got an offer from Olympiakos before the European Championship, which we rejected," said the 34-year-old.
"We haven't received a new offer, but we don't close any doors."
Mellberg joined the Greek club from Valencia in 2009 following seven years with Aston Villa.
