UEFA general secretary Gerhard Aigner today claimed European football's governing body would not stand in the way if the Old Firm wanted to join the Premiership.
Both Celtic and Rangers have both expressed their desire to join the English league while several Premiership chairmen have also backed the move.
Now UEFA say they would sanction the move if the relevant football associations agreed to it, although both the Premier League and FIFA voiced their opposition to the idea.
"I don't think we would stand in anyone's way if everybody agreed but I think that is something which needs to be achieved," Aigner told BBC Sportscene.
"Based upon what we have agreed with Wales, where Welsh clubs can qualify for the European cups, I think we could see that as a possibility.
"But we will have to look at it when the time comes and getting the views of the associations involved."
PA