Tony Mowbray is hoping there will be no last-minute hitches in his bid to bring Landry N'Guemo to Celtic.
Nancy have claimed that N'Guemo has agreed a season-long loan to Parkhead with a view to a permanent move.
However, Mowbray insists that a deal has yet to be completed for the Cameroon midfielder, whose former team-mate Marc-Antoine Fortune has signed for the Bhoys.
"He's not a Celtic player as we sit here otherwise he would be sitting here with us," said Mowbray.
"With any of these deals there are always things that can go wrong, there are always things that can crop up at the last minute and can muddy the waters.
"Until any deal is done, it's best we don't get too deep into that."
N'Guemo has previously been linked with English trio Fulham, Hull City and Newcastle United, but appears set to head to Scotland.
He will help to plug a gap in the squad created by Paul Hartley's departure, with the Scotland international having joined Bristol City.