The 27-year-old has been outstanding for the Hoops this season, bagging 14 goals and 9 assists across all competitions.
The Scotsman has also earned a name for scoring in big matches, scoring the decider in the Old Firm derby last month.
In addition to that, Forrest scored a peach of a goal in the Scottish Cup semi-final win against Aberdeen. And it was one of the season’s best.
Forrest also fared well in the Euro 2020 qualifiers last month, especially in the win against San Marino.
Having been bound with the Celts from the young age, Forrest has now played more than 300 matches.
The Scots winger has beaten the likes of Premiership’s top scorer Alfredo Morelos to win this honour.
Ajer, 22, was at the heart of the defence for the Hoops this season, alongside Boyata.
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The Hoops clinched their eighth straight league title with the win against Aberdeen. They will be facing the Hearts in the Scottish Cup finals.