CELTIC defender Kristoffer Ajer has admitted he owes a debt of gratitude to former boss Ronny Deila.
It was the Norwegian who signed his fellow-countryman during his two-year reign at Parkhead before making way from Brendan Rodgers in May 2016.
Ajer admitted he has not been in touch with Deila recently as he has been so busy with the double treble winners.
The ex-Hoops gaffer posted a message of congratulations to Celtic on Saturday via social media and the central defender said: “I haven’t spoken so much to him lately, but he signed me and that will always be a big thing for me.
“Now I am learning from the gaffer every day and the last two years have been unbelievable.”
Ajer will get seven days off before he meets up with his international team-mates.
The 20-year-old said: “I will have a nice week off before I join up with the national squad.
“I have a game in Iceland which is only half-an-hour away on a flight and then we play at home in Oslo.”
Ajer was re-introduced to the defence after the 4-0 loss against Hearts at Tynecastle in December and became a mainstay in the back four.
He added: “It has been a really professional season from the squad. To win six trophies in two years is a massive performance.
“To be part of this and to play so many games this season has been incredible for me.
“It really means a lot to be a big part of history. You need to keep progressing and next year is another perfect opportunity. This is a great club to learn and improve.”