Edu has a year left on his contract with negotiations on a new deal halted by the club's descent into administration in February. The club rejected an offer from Sochaux for the midfielder in January.
Edu told the club's online Blues News programme: "It has been a difficult situation lately and difficult circumstances too.
"Although there has been an announcement about a new owner maybe coming in, there is still a little bit of uncertainty.
"We've got guys who are eager to stay here though and with the manager and the staff we've got, that definitely bodes well for the future.
"When you see the way we played at the end of the season, we've got something there we can build on."