Last week, former X Factor judge Louis teased that he "could" be entering the famous Australian jungle next month.
Louis has apparently been in talks with ITV about a big-money deal, but Jimmy - who starred on last year's show - thinks the Irish music manager would find it quite difficult.
"He'd buckle," Jimmy told Express online. "He'd crumble. Seriously it's that tough. I don't think he would be able to [cope]."
However, former footballer Jimmy does think Louis would be entertaining to watch: "Corr, they would have to pay him a bomb, wouldn't they? He'd be a good watch."
Jimmy was a popular star on I'm A Celebrity... Get Me Out Of Here!. Often the comedian and joker of the pack, he lifted camp morale and was always playing jokes on his campmates.
Jimmy also struck up a bromance with Carl 'Foggy' Fogarty, with the pair later being nicknamed, Joggy. "I speak to him probably once every two weeks," Jimmy said. "I'll keep in touch with him, he's a mad man."
Try Reveal's digital edition on iPhone & iPad. Subscribe now & never miss an issue!