How the superstar trio perform as a unit could define PSG's season and Pochettino's reign with the French giant, after Messi's shock switch from Barcelona.

Some observers harbour concerns that fielding three such forwards together could leave PSG exposed in other areas. Yet if they click, then PSG could be a rampant force in the Champions League, the tournament they dearly want to win.

Asked if he would select all three on Thursday (AEST) in PSG's European opener, Pochettino said: "Maybe, yes. It is possible."

There is little doubt PSG have three of the world's best forwards, but developing a winning team around them is the challenge facing their Argentine head coach.

Speaking in the pre-game news conference, Pochettino was asked whether he was excited about the prospect of the three front players teaming up.

"I will have to get on board all the excitement because I know how excited everyone is," he said. "I would be crazy to think otherwise."

Across the last four Champions League campaigns, only six players have been directly involved in 30-plus goals in the competition, and Pochettino can call on three of those in Mbappe (37 involvements), Messi (36) and Neymar (31).

If Messi plays a part, he will be making his 150th Champions League appearance after previously turning out 149 times for Barcelona, scoring 120 goals and providing 35 assists so far.

However PSG eventually line up, their Belgian hosts may be privately fearing the worst. That is because the last time Club Brugge hosted the Parisians, they were beaten 5-0 in the 2019-20 Champions League – this remains Brugge's heaviest home defeat in European competition. Mauro Icardi scored twice, while Mbappe came on as a substitute and grabbed a hat-trick.

Pochettino knows many expect his team to be major challengers for Champions League glory this season, but he believes holders Chelsea will take some stopping. He also rates the London outfit, coached by former PSG boss Thomas Tuchel, as a model that PSG should look to follow.

"Chelsea are the holders and they are the team to beat, if there is one," Pochettino said. "They have also strengthened by signing good players and have spent a lot more money than Paris Saint-Germain.

"We are not a team yet. We are a club that has recruited many players this summer. There are some very big names, but we have to turn into a team in the way that Chelsea did last season.

"Chelsea are the team to beat because they achieved their targets. We are a group of players that need to achieve the target of becoming a solid team in order to get the results that we want.

"There are no timeframes. At Paris Saint-Germain, you will be judged on the results that you achieve. There is always pressure at every club and in this case at PSG the club has been targeting a dream for many years of winning the Champions League, and that is something that we cannot deny."