Johan Mjallby today confirmed midfielder Ki Sung-Yueng wants to leave Celtic.
The South Korean, 23, has not returned from playing for his country at the Olympics amid speculation Barclays Premier League side Swansea are poised to launch a £6million bid.
New boss Michael Laudrup has Ki at the top of his shopping list.
Fulham and QPR are also very keen on the player, who was the subject of a £7m from Russian club Rubin Kazan earlier this year, which was rejected by Celtic.
Before flying out from Glasgow Airport for the first leg of their Champions League play-off clash with Helsingborgs tomorrow, Celtic assistant manager Mjallby said: "Ki is not travelling.
"He is keen to move on and the club is in discussion with another club so we have to wait and see what happens.
"I can't say who the clubs is.
"There have been a few teams interested in him but I know for sure there has been one bid and I think maybe one or two others.
"He is a quality player but on the other hand he is keen to move on so the club needs to do something.
"He was at the Olympics for a period of time but we will be sorry to see him go."
Asked whether a replacement would be sought were Ki to leave, Mjallby said: "He has not really been a part of the season so far so we have shown we can live without him.
"On the other hand it would be nice to get someone else in if he goes away.
"If quality players leave the club, you want to freshen things up and have competition.
"But even with Ki here we would like to see some other faces."