The Irish winger, 30, announced his retirement in January after just one training session with his new club.
Titans managing director Michael Searle said tat he would free to pay elsewhere, if the other club stumped up a fee: "Obviously the other club is going to have to reimburse us a reasonable cost but that's a minor issue."
A move back to Wigan might be on the cards, with rumours the Titans may do a swap with Pat Richards, whilst Bradford also have a vacancy for a winger as well as the money to afford one after Marcus Bai's late withdrawal before the start of the season.
Another option for the Cork-born player is Rugby Union, with European champions Munster thought to be interested.
"We know he's only 30, fit and healthy and he doesn't have a recurring injury," said Searle.
"To his credit he gave us the option of retaining his registration."