Celtic regained the Scottish Premiership title after a 1-1 draw with Dundee United on Wednesday.
Needing just a point to secure the title, Georgios Giakoumakis put Celtic ahead, before Dundee United netted an immaterial equalizer through Dylan Levitt.
Celtic all but won the SPL title after recording a 4-1 win over Hearts on Saturday which saw them finish the weekend six points clear of Rangers with two games to play and a goal difference well above their Glasgow rivals.
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The Hoops clinched the league title for the 10th time in 11 seasons and Australian Ange Postecoglou led them to glory in his maiden campaign at Celtic Park.
Postecoglou led Celtic to an impressive double after winning the Scottish League Cup with victory over Hibernian in December.
“It’s been a hell of a season. Our starting point was quite old and the way this group of players and staff rose to the challenge – I couldn’t be prouder,” he said.
“It’s quite overwhelming. It took every ounce of me to get us to where we are and when you get to the finish line you just want to crash.
“It almost feels like two seasons in one. We squeezed in a season to rebuild and a season to win. We had a lot of work to do and with the support of everyone at the club, we got there.”
The Australian left Japanese side Yokohama F. Marinos to replace Neil Lennon at Celtic in June but had a difficult start to life in Scotland.
Celtic were kicked out of the Champions League qualifying stages in their first games in charge while they also lost the SPL opener of the season at Hearts.
The team’s struggles in Europe continued after they were knocked out of the Europa League group stages and then knocked out of the First Conference League.
After losing the first Old Firm derby of the campaign to Rangers in August and a shock defeat at Livingston a month later, Celtic have started to regain form.
Celtic have remained unbeaten in the league since September and moved past Rangers to the top of the table with a stunning 3-0 victory in the Old Firm derby in February.
Another win at Rangers last month extended Celtic’s lead at the top and they maintained that level of consistency to end the season as champions.
Information from Reuters was used in this report.