For such a young footballer, Liam Shaw has already experienced the game at its most fickle.

At just 20-years-old the self-described box-to-box midfielder has worked under as many managers as he's had hot dinners. During his time in the Sheffield Wednesday academy, Jos Luhukay was the first-team boss. The day after the Dutchman was sacked, Shaw penned his first pro contract at Hillsborough.

Steve Bruce took charge of the Owls next and then it was Garry Monk. After him came the short stint for Tony Pulis and then on to current manager Darren Moore for whom Shaw played six times, but could not help them survive in the Championship.

It was former Celtic boss Neil Lennon who spoke to Shaw, convincing him to leave his club and join the Glasgow giants to push for silverware at Parkhead. But before he was even in the door, Lennon was gone and Ange Postecoglou was brought in.

It is a collective managerial turnover that your local McDonalds won't even go through in a three-year spell. For Shaw, though, he is not fazed about having to impress another gaffer. If Lennon liked the look of him, the chances are he has quality and he is desperate to prove that to Postecoglou after finally walking through the Parkhead gates and throwing on the green and white hoops following his pre-contract.

"It's been a long time coming, six or seven months, when I found out it was overwhelming to be honest. To come here and see the stadium. I've put pen to paper now so hopefully can go back and hit the ground running for pre-season, meet all the lads and get my head down and work hard. I can't wait to get started.

"He (Postecoglou) is a new manager so everyone is on a fresh start and will have to try and go in and impress him. That's been like from the start of my career I've had different managers and you have to keep your head down, show your ability and show you've got a good attitude. Hopefully he picks you and you do well for him."

Shaw starred 22 times for Wednesday last season and was enjoying making his way to becoming a regular for the club before Celtic made their interest known. From that moment his head was turned and he wanted the switch to, as he puts it, 'one of the biggest clubs in Europe'.

"When I heard Celtic were interested I couldn't believe it to be honest," he added. "A club of this stature, how many trophies they've won, they're one of the biggest clubs in Europe probably. I couldn't really describe what I was feeling, it was massive for me and my family to get that recognition. But now it's up to me, I've signed now, it's up to me to start performing on the pitch.

"It's important winning stuff as a club, for fans and as a player you have to have that winning mentality. Going to a club like this that's what attracts you as a player because you know they want to win stuff and there's a real chance to do that, that's really important."

Shaw admits he wants fans back inside the stadium as it has been a long time coming. He feels the game is not the same without supporters making their voices known.

And he did his best to endear himself to the Hoops punters while speaking to Celtic TV when describing one particular difference he has noticed since leaving England.

"(The Celtic strip) is a really nice kit, it feels good in green. I've always been in blue - but now green is my new favourite colour."