Celtic legend Chris Sutton is urging the club to deal in Kris Commons.
The winger is interesting Crystal Palace and Leicester City.
"I don't think Celtic can afford to let him go," he told the Daily Mail. "Because who do they get to replace him?
"I know this season he has not really got going through no fault of his own but he has still shown, in the Zagreb game for example, that he has the class to turn a game.
"Now Celtic don't have enough of those players. Whatever you say about Stefan Johansen, he is not as good a footballer - he might have better legs but Commons can still change a game at the top level.
"Why would you want to let him go? It's common sense - unless his wage demands are off the planet, which I doubt they are. Celtic are making an enormous mistake if they don't get him signed."
