Whenever a new manager walks through the door at Celtic, they will have little opportunity to get to grips with their surroundings at Parkhead.

That’s because the Bhoys' playing squad is in dire need of being repaired.

On the chalkboard

The biggest concern from Celtic’s diabolical season is their defence. They have shipped 16 more goals than their biggest rivals Rangers and also conceded 19 times in just six Europa League outings.

It has been a wretched campaign which has been summed up by two lacklustre displays in the space of a few weeks against the Gers.

They were demolished 4-1 in the league last weekend in a performance which lacked urgency, authority and composure. Those qualities were also missing in the 2-0 defeat in the Scottish Cup fourth round - on that occasion, it was Diego Laxalt who was made to rue some unforgivable errors.

The AC Milan loanee was completely out of the picture as Rangers charged down his side of the pitch for the opener and then for the second, he was turned inside out in embarrassing fashion by Joe Aribo.

Laxalt’s defensive qualities have left a lot to be desired for vast portions of the campaign and it would be surprising if we saw him back at Parkhead next term.

The solution

Celtic have seen a number of high-class left-backs escape their clutches in years gone by. The Hoops famously let Andy Robertson leave the club when he was just 15, while Aaron Hickey is another defender they should have kept at Lennoxtown.

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Two years ago, Kieran Tierney departed the club in a deal worth £25m. Ever since the Arsenal defender left, they haven’t looked assured on that side of the pitch, and that’s why they should revive their interest in Josh Doig this summer.

Celtic were interested in signing the 18-year-old during the winter months, and if they decide against bringing Laxalt back, it’s Doig to whom they must turn.

The teenager has enjoyed a breakthrough season with Hibernian and has been named alongside David Turnbull as a nominee for the Young Player of the Season. A move to Celtic would be just desserts for an eye-catching campaign in which he’s shown similar attributes to Tierney going forward.

Speaking about Doig this season, former Celtic assistant manager John Collins said: “I have enjoyed watching his appetite, his desire to get forward. He’s a player that, when you watch him, he 100% sprints up and back again. That’s something you don’t often see and it catches your eye. He’s got that real desire to get up and support.”

Collins added: “He still has to work on his final delivery into the box, but he’s shown enormous potential.”

Doig already possesses almost all of the attributes you require from a modern full-back, but crucially, he can also defend astutely - the young Scot has won the same number of tackles per game (1.7) as Laxalt. That said, it's worth considering how young he is and that number will only grow larger the better and more confident he gets.

He would certainly seem a marvellous pick-up this summer if they can beat others to his signature.

AND in other news, Celtic can sign ideal Elyounoussi heir in £80k-p/w titan with "breathtaking technique"...