The youngster is not resting on his laurels, and is keen to thank departing boss Ronny Deila.
The player started the season on the peripheral of the Celtic squad with just two Scottish Premiership appearances to his name.
This year has proved to be his breakthrough year with the Hoops though, establishing himself as a regular in the first team and impressing consistently.
Key to that has been manager Ronny Deila, who gave him his chance to impress. However, with the Norwegian boss set to leave in the summer, Tierney insists he will have to prove himself all over again next season.
“The manager has been great with me,” he told the Scottish Herald.
“I can’t thank him enough for everything he has said. I will forever be thankful because if it wasn’t for him I wouldn’t be where I am.”
“I will definitely have to impress the new manager, It’s the same for the older guys as well. It won’t matter what we have done in the last season - it’s all about the new season.”
Given Tierney’s meteoric rise this season, and the level of performance he has shown he is capable of, it is hard to imagine the next Celtic boss dropping him next season.
He is one of few who has impressed in a disappointing season for the club and any new manager will surely be aware he has a prodigious talent on his hands.
Given his young age though, a lack of game time next season would hardly be a disaster though, with him having plenty of time to make a spot his own in future.