CELTIC manager Neil Lennon could be back in the race for Leicester City defender Matt Mills.
The 25-year-old had been identified as a potential signing target by the Parkhead club, but it looked as though he was on his way to Bolton on a season-long loan deal.
Bolton remain in the driving seat having agreed to pay £1m up front to land Mills on loan, with an agreement in place that a second £1m payment would be made to make the move permanent.
But the deal has yet to be signed and it's understood Celtic have been made aware of the delay and could come up with a late bid should Mills' future not be sorted out by the end of the week.
Lennon's priority is to sign goalkeeper Fraser Forster, with contract talks close to being finalised but he will still have to sell a player for substantial money to allow him to re-invest in the squad.
Ki Sung-Yueng has been linked with a £7m move and Lennon would be willing to part with the midfielder for that sort of money.
But German side Werder Bremen have denied they want him.
General Manager Klaus Allofs said: "Ki is interesting but not someone we are pursuing."
Lennon remains hopeful of securing keeper Forster on a permanent deal.
Reports suggested everything bar the length of contract has been agreed, with Forster looking for three years and the club pushing for four.