Worried Charlie Nicholas insists Celtic principal shareholder Dermot Desmond is showing a lack of "urgency" in the ongoing search for a new manager.
The principal shareholder spoke to the club's website last week as he looks for a boss who can carry the fight to Steven Gerrard and Rangers.
Roy Keane and Eddie Howe are among the betting favourites but the former Parkhead star is concerned that it might be too late with a mammoth rebuilding job needed.
Rugby chief Dominic McKay will replace Peter Lawwell as chief executive and a director of football role is also expected to arrive imminently.
Nicholas claims Desmond has "lost his enthusiasm for Celtic " and believes the club is vulnerable as their ongoing search for a new manager continiues.
Speaking in his Express column, the 59-year-old said: "I challenged Dermot Desmond recently to provide updates on what is happening at Celtic.
"Last week, in typical Dermot fashion, he made a statement but said precisely nothing!
"There's a reason he is a non-executive director - he doesn't have to explain himself.
"He just speaks to those he can influence.
"But he no longer controls the media or even his club's fans.
"Ex-director Brian Dempsey also recently asked questions about Desmond and the club.
"
But we are all still twiddling our thumbs wondering who the new manager will be.
"Is it going to be Roy Keane, Eddie Howe or maybe John Kennedy?
"Desmond received praise when the Hoops appointed Martin O'Neill and then Brendan Rodgers.
"But I don't see that same urgency now, even though Celtic are hugely vulnerable.
"I maintain Dermot - no matter what he claims - has lost his enthusiasm for Celtic.
"Even if he were to deliver someone like Keane next week, there is still a mountain of work to be done.
"That is why the fans are rightly pleading for answers... and hope."
