Published Monday, 23 September 2013
English and French sides have threatened to quit the competition over things like qualification and revenue.
But former Ulster player Carr thinks that a compromise will be found.
He said: "At the end of the day it seems nearly inconceivable to people within Ireland at least that what has been the premium rugby competition would be changed in such a way as to reduce the numbers particularly when rugby around the world is trying to bring others in."
Those behind the move say the new tournament will bring bigger revenues and stronger competition - but uncertainty about the plans grow by the day.
On Sunday, the French Rugby Federation looked set to block the ideas. It is something which Carr maintains is far from certain.
He continued: "It would be terrible for them to throw the baby out with the bathwater and change the competition entirely but I think there is still a prospect of an agreement."
© UTV News