Celtic have expressed an interest in signing Roy Keane after the 34-year-old midfielder's surprise departure from Manchester United.
Roy Keane has talked about playing for Celtic
Keane has previously said that he would like to end his career at Celtic Park.
A Celtic spokesman expressed admiration for the Ireland captain but said "as yet there have been no discussions".
However, he added: "If at any time Roy would like to speak to us about his future and Celtic's, we would be only too happy to speak to him."
Celtic had refused to comment about Keane when he was linked with the Glasgow club in September.
But, responding to the news from Old Trafford, the spokesman said: "Roy Keane was a magnificent player and servant for Manchester United, but he also knows all about Celtic."
Such a statement will go down well with the club's support, but Celtic may already know that the chances of turning that desire into reality appear remote.
Celtic would be doing well to match a quarter of the £90,000 per week or more that Keane earned in wages by the end of his 12-year spell with the English club.
Those who know Keane suggest that money would not be his main motivation and that he has turned down big-money offers in the past.
And, while Celtic already face competition from Portsmouth, he has said previously that he could not see himself playing for any other club in the English Premiership.
However, his concern would be the lack of competition provided by some of the lesser clubs in the Scottish Premier League and his sights may instead be on the vacant Republic of Ireland manager's job.
Keane officially left Old Trafford on Friday by mutual consent, although sources suggest it was a result of a bust-up with manager Alex Ferguson.
And Lisbon Lion Jim Craig has questioned whether Celtic boss Gordon Strachan would want Keane at Parkhead given his age, recent injury problems and troublesome personality.
"He has more experience than all the players, he is a Champions League winner, but you have got to ask is he the same Roy Keane at the height of his powers? The answer to that is no," said Craig.
"Is he able to play even a third of the season through injury? He has not been able to do that with United. Will things get any better next season and thereafter?
"Will he also be a disruptive influence behind the scenes? He occasionally was at Manchester United.
"Will he also take a considerable drop in wages from what he has been on?"