Chris Sutton has hailed “remarkable” Ange Postecoglou as he admits Celtic looked “years behind” their old foes Rangers last season.

The Hoops legend has been blown away by his old team this season who look certain to secure a remarkable double.

They struggled at times in a 1-1 draw with bitter rivals on Sunday but Sutton was keen to stress the days of regular smashings that became the norm under former boss Brendan Rodgers have long gone.

He said of Rangers’ performance in his Daily Record column: “They came on strong at the start and then went for it in the second half.

“They might have even sneaked it at the end. I understand the jitters in the stands and on the pitch.

“This is not the Brendan Rodgers era when Celtic sealed the title against Rangers by sticking five past them and supporters were simply turning up for a party and the only question was how many.

“No, we’ve seen in the games this year there is not much between these teams.

“Celtic’s 3-0 win in February was the only really one-sided derby as all of the others ebbed and flowed either way.

“Rangers were not going to go down without a fight.

“It’s just a testament to Celtic they managed to withstand it and are now on the verge of history.

“This has been an incredible journey under Postecoglou. Twelve months ago, Rangers strolled past their ragged rivals.

“It was 4-1 at Ibrox and a complete spanking. Celtic looked years behind.

“A 25 point winning margin was just proof there was a gulf between the teams.

“It would have been hard for any manager to get from that stage to this, but when you consider what Postecoglou had to come through it makes it all the more remarkable.”