The former Blackburn Rovers, Blackpool and Glasgow Rangers star, who currently manages Clyde, questioned whether Celtic really want to play the Gers.
Barry Ferguson believes that while an Old Firm encounter between Celtic and Rangers is getting closer, on current form, the Scottish Premiership champions may not be feeling as confident about their superiority as they may have previously been.
The Bhoys visit St Mirren in Saturday’s early kick-off and current sit fourth and five points off leaders Dundee United with a game in hand.
It follows a run of just one win from their last four in the Scottish top-flight, a string of results that have had some question the suitability of Ronny Deila to the Parkhead hotseat.
Celtic could have been drawn against Rangers in the League Cup earlier this week but were ultimately kept apart.
And with the Gers faring well in the Scottish Championship and still in the cup competitions, Ferguson believes a meeting is fast approaching, whether the Hoops like it or not.
Speaking in his column for the Daily Record, the 36-year-old claimed “an Old Firm collision is getting closer.
"Personally, it can’t come quickly enough because it’s been badly missed and that has been the feeling of many Celtic fans in the past two years. But I’m not so sure they’re as eager for a crack at Rangers now.
"I’ve heard so much talk in the past couple of years about how Celtic are 10 years ahead of my old club ... but there is no doubt the gap is closing. In fact I believe the squads are pretty evenly matched in terms of quality."
Celtic are set to meet Partick Thistle at Parkhead in the Scottish League Cup, while Rangers face St Johnstone at Ibrox, with wins for both increasing the chances of an Old Firm reunion.
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