THERE is something obscene about the manner in which Paris Saint-Germain have been spending money this summer. So astronomical are the sums being thrown about they are almost in danger of losing their shock value.

You have to remind yourself that the £400 million which the club’s Qatari owners have just spent on two players - Neymar and Kylian Mbappe – could comfortably bankroll even Celtic’s playing department for the best part of 15 years.

While it is a disparity of the same order which the likes of tomorrow’s opponents Hamilton must tackle most weeks, Callum McGregor finds it as “ridiculous” as the rest of us.

This time last season Celtic were going down 7-0 at the Camp Nou on their Champions League opener but it is hard to envisage a similar scenario unfolding on Tuesday night regardless of this gargantuan Gallic outlay. For a start, Celtic are at home, and as Manchester City proved last time out, even the biggest names in world football can be susceptible on big European nights at Parkhead. Secondly, PSG are no Barcelona. They may boast a similarly fearsome attacking trident of Neymar, Mbappe and Edinson Cavani, but their comeuppance against the Catalans proves that they still have plenty of work to do.

“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. It’s incredible the market value of their team. You saw last year in the Champions league that they blew Barcelona away at home and that shows the quality.

“But that 6-1 in the second leg does give you hope,” he added. “You never know what team is going to show up at Celtic Park. We can try and get after them and if they are not quite at it we might get a result. Teams come to Celtic Park and things have happened in that unbelievable atmosphere. You can’t say how they are going to perform on the day. We’ll come up with a game-plan and do the best we can to try and get a result.

“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.

“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.”