The Old Firm have been separated by divisions since the 2012-13 season.
Rangers were sent to the fourth tier of Scottish football in 2012 after financial troubles and have slowly been making their way back to the Premier League.
Ajax youth coach Ronald de Boer feels their absence has been damaging to Scottish football and reduced the interest it commands overseas.
“In Holland, they don’t show highlights of the Celtic games anymore and why? It’s because Rangers aren’t there,” said the Dutchman in the Daily Record.
“People here don’t only talk about Rangers coming back, they talk about the Old Firm. They talk about both teams together and that’s what they’re interested in.
People here are not interested in Celtic because they already know the end result and that is not good for the Scottish league,” he added.
His comments are hard to argue with, and the last three seasons have seen the Hoops stroll to the league title at a canter.
A league reunion of the Old Firm looks all but guaranteed for next season however, with a new-look Rangers side breezing through their Championship opposition under Mark Warburton’s guidance.
Their return to the top flight will undoubtedly revive interest in Scottish football but whether they will be able to seriously challenge Ronny Deila’s men straight off the bat remains to be seen.