Kristoffer Ajer's response when asked if he's concerned about Deila's Celtic future

Ronny Deila

Kristoffer Ajer says he didn't ask for assurances about Ronny Deila's future as Celtic manager.

New Celtic signing Kristoffer Ajer has told BBC Sport he thinks manager Ronny Deila will keep his place in the Bhoys dugout for a long time yet.

Ajer, 17, penned a deal with Celtic earlier today, which means he will join the club in the summer on a four-year deal from IK Start in his native Norway.

The 6ft 5in midfielder, who has been tipped for a bright future off the back of his promising displays in Norway, has been eyed by a host of European clubs over the last year, but Celtic pulled off a coup by announcing his signature today.

The move means Ajer will link up with his fellow Norwegian Ronny Deila at Celtic - if he manages to keep his place as Bhoys manager.

Deila may have won two trophies last season, but he has struggled this term, crashing out of both the Champions League and the Europa League before 2015 was even over.

An exit from the Scottish League Cup and an unconvincing defence of the Scottish Premiership title have piled the pressure on manager Deila, with many expecting him to leave the club by the end of the campaign.

Now, Ajer has been asked whether he is concerned about Deila's future having agreed to join him in Glasgow, but he told BBC Sport that he thinks Deila will be in charge of Celtic for a long time yet.

"He's the manager now and that's what's important," Ajer said. "You don't know what will happen. Ronny's a great manager and I am really sure that he will be manager for a long time. Back in Norway, he won the Premiership and I will prove that I am good enough to play," he added.

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