Paris St-Germain are enjoying a season to remember - but know one of the biggest dangers to fulfilling their ultimate dream could be a player currently on their books.

Fresh from retaining the Ligue 1 title, the French side host Aston Villa in the Champions League quarter-finals on Wednesday, facing the unusual prospect of coming up against one of their own in Marco Asensio.

The 29-year-old Spain forward joined Villa on loan from PSG in January and has been a revelation, with eight goals and one assist in his 11 games for the Villans.

Asensio's form has helped Unai Emery's men enjoy a seven-match winning run, which has booked spots in the FA Cup semi-final and Champions League last eight, and within touching distance of the Premier League top four.

PSG, though, are flying themselves and could yet end the season with four trophies.

Still unbeaten in their league title triumph, and having won the French Supercup, Luis Enrique's side are also in May's Coupe de France final and dream of winning the Champions League for a first time.

With confidence high in his own ranks, the PSG boss is pleased Asensio too has found a stage to showcase his talent and welcomed his Paris return.

"I am delighted he can play," said Enrique, who also coached the former Real Madrid player when he was in charge of Spain.

"He wasn't getting the game time he wanted here and he had the opportunity to go to Birmingham. It is good that he is playing.

"I have shared a lot with him with the national team. He came to the World Cup with me and was very important, and he was important for us last season and at the start of this season. He is a top-class player."

But will PSG rue Asensio's departure, especially when he was part of Real Madrid squads that won the Champions League three times?

"He's worked really hard, making effort for the team offensively whenever he touches the ball," said Villa team-mate Youri Tielemans.

"His first cameo at Villa Park [in the FA Cup win over Tottenham] was brilliant, he just glided through. He takes responsibility with the ball. Off the pitch he's really calm, really good and works really hard.

"When you look at him you don't think he's a hard worker because he's a ball player, but off the ball he does his job really good and that's what we need from every player."

English football fans may be surprised Asensio is even allowed to feature against PSG, with a law preventing loan players playing against their parent club brought in to the Premier League back in 2004.

But Uefa's rules state clubs cannot apply "any influence whatsoever over the players that another club may (or may not) field in a match" - meaning PSG's Champions League dream could be dashed by their own player.

Asensio's experience and Champions League pedigree could also be a massive factor, having helped Real Madrid to triumph in 2017, 2018 and 2022.

He moved in 2023 to Paris, where his career stalled with just seven goals in 47 appearances - even if he did win the double of French league and cup last season.

That stutter came after he won 17 trophies at Real - as many as club icon and footballing great Alfredo di Stefano.

In describing Asensio as world class, former Arsenal and England defender Matt Upson told BBC Radio 5 Live: "He's going to play a big part in the exciting finish to the season they have ahead."

Asensio was perhaps destined to be a footballer, with his father having named him after legendary Netherlands striker Marco van Basten.

But he has forged an impressive career in his own right.

After starting out at Mallorca, he joined Real Madrid at 18 in 2014 where, following a loan spell at Espanyol, he also won La Liga three times and four Fifa Club World Cups with the Spanish giants.

After seven seasons at the Bernabeu he made the move to French giants PSG, helping them to a domestic treble last year.

Given that success, it may have appeared strange that Asensio joined a club not challenging for a league title or major trophies.

But fellow Spaniard Emery, who also managed Sevilla, Arsenal and PSG, has been a long-time admirer and played a key role in the loan move.

"Unai has tried to get Asensio in at least three windows," Spanish football expert Guillem Balague told BBC Sport.

"He has always said to Unai he wanted to work with him and develop with him."

The clincher for Emery appeared to be the promise of playing Asensio in the number 10 position.

"He hasn't played there since Mallorca," added Balague. "At Madrid he wasn't allowed, so that was the discussion he had with Unai. He was told number 10 and you can see the good consequences of it."

Villa's Belgium international Tielemans added: "The system suits him, to be free around the striker and pick up spaces - we can find him through the lines, he's a really good player."