G14 president Jean Michael Auels is looking to expand and believes Celtic are ready to join the likes of Real Madrid, Man U and Juventus in the powerful interest group.
Celtic's membership should be rubber-stamped within three months.
A G14 source told the Sunday Mail: "Invitations will be sent out to clubs to join and Celtic have been under serious consideration.
"They are a big club and have grown considerably in the past five years both on and off the park."