Former Celtic striker John Hartson believes Tony Mowbray's men have too much to do in their quest to land SPL honours this term.
The Bhoys trail Glasgow rivals Rangers by ten points following their dramatic 4-4 draw at Aberdeen at the weekend.
Celtic had led 4-2 with 15 minutes to go but a late double by Dons forward Steven MacLean exposed their frailties.
Coupled with Rangers' resounding 3-0 success at Ibrox against Hibernian, it looks more than likely that the title will go to Walter Smith's men once again.
Speaking to BBC Scotland, Hartson said: "I feel that Celtic aren't good enough to go on an unbeaten run. Their defence is too leaky, they concede far too many goals.
"If Celtic were going to get back into this race, they'd have done it by now. There are still two Old Firm games, there are plenty of points to play for, but I think they'll drop more points.
"Anything is possible. Celtic could get on a good run and Rangers could get on a bad run. But Rangers have their eye on the ball. They know what to do. They beat a very good Hibs team convincingly."