Celtic face a dilemma over trying to keep Kristoffer Ajer from leaving Parkhead during the summer transfer window, according to Alex Bruce.

The former Kilmarnock centre-back, speaking exclusively to Football Insider assistant editor Russell Edge, insists it would be a “big” boost if the 22-year-old remains with the Bhoys but admits they will not want an unhappy player on their books.

As revealed by Football Insider, Ajer has instructed his agent to negotiate with suitors over a prospective move away from Parkhead this summer.

It is understood that while the centre-back has not totally made his mind up on leaving Celtic, he is keen to hear what interested clubs like Leicester City and AC Milan have to offer.

With the Norway international eyeing a move away, Bruce insists that Neil Lennon has a conundrum on his hands over whether to try and force him to stay.

Asked if Celtic found themselves in a dilemma over trying to keep Ajer at Parkhead, Bruce told Football Insider: “Of course, they obviously won’t want an unhappy player on their hands.

“Celtic will always be able to attract players, there’s no doubt about that. If he does leave, it’s about finding the right replacement.

“Obviously with everything that’s going on, it’s going to affect people’s transfer budgets. If he has to stay at Celtic, it will be big for them because he’s done well. It’s not a bad club to stay at, is it?”

Ajer has been a mainstay for the Bhoys in recent years, with 129 appearances under his belt.

The 14-cap colossus has sat out just four games across all competitions this season, meaning he has played 4,263 minutes across 49 matches – the third highest in the Celtic squad.

In other Celtic news, it can be REVEALED that the club have set their sights on signing Tottenham sensation after offer goes in.