The loanee leaves after his 93 day spell came to an end, and is bitterly disappointed he cannot stay with the club.
Spekaing after his final game, the loss to Southend, Ex told the media: "You always want to be out playing when you aren't playing for your parent club so it's very frustrating and it's a rule that has to be looked at.
"When I get back to Peterborough I shall have to speak to people directly and see if we can come to some arrangement.
"I've enjoyed it immensely here. I've been playing so that's always a plus and the atmosphere at the club has been amazing. Footballing wise I don't think there's another team like it in League Two and wherever I go now it's not going to be the same and if they finish outside the top three then it's a tragedy. Realistically, I can see them going up automatically."
Geohaghon added: "January is two months away and anything can happen. They could find someone else and bring him in so I'm not getting my hopes up.
"Hopefully I can come back again and get some games in but we'll have to wait and see what happens come January. But, if they find someone to replace me then it's a bonus for the team and a bonus for the club as well and hopefully they will find someone who will serve them well and then they can start to pick up points again.
"I wish everyone all the very best and will keep an eye out each week for the lads results."
Spekaing after his final game, the loss to Southend, Ex told the media: "You always want to be out playing when you aren't playing for your parent club so it's very frustrating and it's a rule that has to be looked at.
"When I get back to Peterborough I shall have to speak to people directly and see if we can come to some arrangement.
"I've enjoyed it immensely here. I've been playing so that's always a plus and the atmosphere at the club has been amazing. Footballing wise I don't think there's another team like it in League Two and wherever I go now it's not going to be the same and if they finish outside the top three then it's a tragedy. Realistically, I can see them going up automatically."
Geohaghon added: "January is two months away and anything can happen. They could find someone else and bring him in so I'm not getting my hopes up.
"Hopefully I can come back again and get some games in but we'll have to wait and see what happens come January. But, if they find someone to replace me then it's a bonus for the team and a bonus for the club as well and hopefully they will find someone who will serve them well and then they can start to pick up points again.
"I wish everyone all the very best and will keep an eye out each week for the lads results."