CALLUM McGregor finds it as "ridiculous" as the rest of us that Paris St Germain have spent the best part of £400m on just two players this season. But the 24-year-old hopes to have the last laugh on the Qatari-backed big spending French outfit this Tuesday - because Celtic have got that priceless first year of Champions League experience under their belts.

All eyes will be on the French outfit - who have just added Kylian Mbappe, for a cool £180m, to world record £222m signing Neymar - when they arrive in Glasgow this midweek but McGregor knows that even the biggest sides in world football can be susceptible on big European nights at Parkhead.

And unlike Barcelona, who routed Celtic 7-0 in last season opener, PSG still have plenty to prove on the European stage. Unai Emery's side might have destroyed Barca 4-0 in the knockout stages last year but going down 6-1 in the return match to lose the tie proves they can be susceptible at the back.

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Attack is the best form of defence, not least because even with their wealth of playing resources, the Parisians are not without their injury problems, with Argentinian superstar Angel di Maria and Brazilian skipper Thiago Silva both already rated doubtful for the tie.

"To be honest it’s great for us that we are coming up against players like that and teams like PSG who are setting the bar," said McGregor. “It’s great to test yourself at that level and see how far we have come as a team. The amount of money spent has been ridiculous but that’s the modern football market.

"You saw last year in the Champions league that they blew Barcelona away at home and that shows the quality," he added. "But that 6-1 in the second leg does give you hope. You never know what team is going to show up at Celtic Park. Teams come to Celtic Park and things have happened in that unbelievable atmosphere.

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"Before the Man City game last season, they had won 10 games yet came to Celtic Park and found it to be a totally different game. We got after them and created loads of chances. I’m sure we can go toe to toe with these teams when they come to Celtic Park and we’ve got that crowd behind us."

Having made his acquaintance in Barcelona colours last year, McGregor is no stranger to coming up against Neymar. As much as he can appreciate that extra bit of ability which the world's best possess, he feels Celtic will be far better equipped than the "tough lesson" they learned at the Camp Nou last year.

"It’s obvious that these boys are top, top players - you can see that when you place against them," he added. "There’s that wee shift and they are thinking two steps ahead of everyone else on the field.

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"But our players won’t be fazed by it," he added. "You have obviously got to respect the opponent but when the games comes around it won’t be a case of respecting them too much. You want to press, get after them and show how good you are. We are on this stage for a reason. We deserve to be there. We’ve got to impose ourselves on the game as well.

"Obviously Barca played really well on that night [the 7-0] as well. But I think it will be a different story in terms of us getting closer to PSG this time. We were caught cold that night. We never pressed or got up and made tackles. It was a big lesson for us. But we’re a year further on and I’m sure we’ll be ready for the games this time. We’re going into the group feeling we are very much a part of it. We’re not going in to make up the numbers."