Frank McAvennie has claimed he has been told Celtic will have a £40 million warchest to spend this summer.
Martin O'Neill is poised to be announced as the permanent manager at Parkhead and there is expected to be a lot of work done on the squad.
A number of last season's squad were on loan and have returned to their parent clubs and there could be others set to follow them out the door, meaning they will need to be replaced.
And Celtic hero McAvnnie has heard there will be £40m available for O'Neill to spend.
He told his 'Let Me Be Frank' podcast: "I heard £40million. I think there is a lot of players they need to get rid of.
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"I know you are going to be losing money on some of them, but even if you get them out and get the wages."
Reo Hatate looks to be out on his way out, while there is believed to be interest in Arne Engels, Benjamin Nygren and Daizen Maeda.
McAvennie has predicted Engels will stay put but the rest will move on, along with Michel-Ange Balikwisha who couldn't get a look in last season.
He added: "I think the boy [Michel-Ange] Balikwisha has got to leave, because I don't think he is going to get a game. Maybe this boy Balikwisha will leave Celtic and be outstanding.
"I think [Arne] Engels will stay, I think [Benjamin] Nygren will go, [Daizen] Maeda will go and [Reo] Hatate will go. That's my opinion."
