The Scottish Premiership side missed the chance to extend their lead at the top of the table to five points.
Celtic manager Brendan Rodgers
Brendan Rodgers has admitted that Inverness Caledonian Thistle goalkeeper Owain Fon Williams put in a remarkable display on Sunday to deny Celtic their fifth consecutive league win, The Scottish Sun reports.
The Hoops could have gone five points clear at the top of the Scottish Premiership table, but an equaliser in the dying minutes meant that they had to settle for a 2-2 draw.
Celtic's Erik Sviatchenko
And while Erik Sviatchenko was fortunate not to concede a penalty during the contest, it was undoubtedly the champions that dominated the majority of the game.
However, they were unable to add to their two goals, prompting Rodgers to praise Fon Williams' performance. And while he admitted being left frustrated, he did insist that he was pleased with a lot of their attacking play.
Inverness keeper Owain fon Williams, during his time with Tranmere
"The keeper had a remarkable game with some great saves," he told The Scottish Sun.
"We are little bit frustrated, but coming off a tough week, if we can't take all three points, one will do.
"Some of our movement and tempo of attack was brilliant and you have to credit the goalkeeper and, on another day, we could have scored another four or five."
The Bhoys had 23 attempts on goal with nine shots finding the target, which highlights just how impressive the Caley keeper's display actually was.
But Rodgers will be pleased to see that his side tested the opposition keeper so often, as it seems incredibly unlikely that the stoppers they will come up against in the coming weeks will all enjoy such inspired afternoons.