Messi was a mainstay of Guardiola's Barca side that won 14 major titles and has been linked with a switch to City
Earlier, Messi's World Cup-winning team mate Emiliano Martinez won the Lev Yashin award for the world's best goalkeeper.
PSG said in a statement that the four players were currently in isolation and subject to the appropriate health protocols.
Juventus striker Cristiano Ronaldo would like Barcelona's Lionel Messi to leave Spain and rekindle their rivalry by joining him in the Italian top flight.
Lionel Messi received a surprise house-share offer from Real Madrid captain Sergio Ramos
Two of the most intimidating strikers in world football, Argentina's 35-year-old Lionel Messi and Poland's 34-year-old Robert Lewandowski, line up against each other on Wednesday with a last 16 place at stake in the World Cup.
Lionel Messi lamented Argentina's shock second half capitulation against Saudi Arabia on Tuesday but said he was not surprised by the threat from opponents 48 places lower in the world rankings.
'The kids' happiness with the resemblance between me and Messi is indescribable. When you make someone happy, God rewards you. I wanted to share this happiness with them'.
Although the prosecutor has argued Lionel Messi should not have to answer the charges as his father oversaw his finances, a court document published on Thursday showed the judge in the case had ruled he must still appear as a defendant.
The Italian coach considers that having healthy players, such as striker Karim Benzema, will be the key to face the schedule that awaits the Madrid side, who will be looking to defend their LaLiga, Spanish Super Cup and Champions League titles.
Argentina and Australia have only two full days to rest, a factor Argentine manager Lionel Scaloni called 'madness'.
Suarez appeared to be caught on camera spitting at the staffer in video that went viral on social media.
Real Madrid star Cristiano Ronaldo has heatedly denied suggestions that he calls Argentine ace Lionel Messi offensive nicknames.
Two of the greatest football players of the 21st century, Lionel Messi and Cristiano Ronaldo broke the Internet by posting a picture as part of the promotional campaign for the FIFA World Cup, in which they were portrayed playing chess against each other.
The Barca chief also said that the financial situation that he had inherited from former club president Josep Maria Bartomeu was "far, far worse" than anticipated.
Barcelona captain Lionel Messi sat out Friday's training session as he has a small thigh strain, the Spanish champions said. Barca returned to full training on Monday for the first time in three months ahead of the Spanish season re-starting on June 11 after being halted since March due to the COVID-19 pandemic.
Lionel Messi became the all-time top scorer for a single soccer club on Tuesday after scoring his 644th goal for Barcelona during their La Liga match against Real Valladolid, surpassing Pele's record goal haul for Brazilian side Santos.
Pele scored 643 goals in 19 seasons for Brazilian side Santos.
Boxer Alvarez fumes at Messi celebration video after beating Mexico
Lionel Messi and Luis Suarez scored twice each as La Liga champions Barcelona turned on the style to hammer Huesca 8-2 on Sunday and join Real Madrid as the only teams in the league to win their opening three games.
Travellers are turning concerts into full-fledged weekend getaways, giving rise to the 'gigcation' -- a short, experience-led micro-holiday.
Argentina became the first side to book passage into the Copa America quarter-finals
Lionel Messi's father Jorge has sought to play down comments his son made this week which suggested the four-time World Player of the Year could consider leaving Barcelona.
Novak Djokovic is one win away from a 100th career singles title after breezing past Grigor Dimitrov 6-2, 6-3 on Friday to reach the Miami Open final, where he will face either third seed Taylor Fritz or rising Czech Jakub Mensik.
The 27-year-old Argentine posted a selfie on Facebook featuring his girlfriend Antonella Roccuzzo and 22-month old son Thiago.
The Aston Villa 'keeper saved three penalties in the 2021 Copa America semi-final and Argentina went on to lift the trophy. Now he's stopped two more in a World Cup quarter-final and this could just be a good omen for Messi!
Argentina beat Ecuador 4-2 on penalties to move into the semi-finals of the Copa America on Thursday after goalkeeper Emi Martinez made two saves for the reigning champions in the shoot-out following a 1-1 draw in regulation time.
With immense pressure on him to match the late great Diego Maradona and send the trophy back to Buenos Aires, Lionel Messi has lit up the Qatar tournament while others in the superstar stratum - Neymar, Cristiano Ronaldo - have underwhelmed and gone home.
Lionel Messi celebrated his sixth Ballon D'Or award with a brilliant hat-trick as Barcelona moved back top of La Liga with an emphatic 5-2 victory over Real Mallorca.
Messi's lawyers informed Barcelona, on Tuesday, that the Argentine wanted to take up a release clause in his contract which could allow him to leave for nothing.
Messi agreed the new contract with Barcelona in July but the club did not release the usual photo of the player putting pen to paper, fuelling speculation he could depart in June 2018, when his previous deal ran out, for free.
Indian fans wait for Messi's '2011 Tendulkar moment'
'I had a feeling from within that this tournament (Asia Cup) would be something special, but I did not think that I would become the player-of-the-tournament.'
The Argentine striker had hosted a team meeting on Monday to kick start preparations for the clash against Atletico Madrid.
Barcelona striker Lionel Messi is expected to play in Wednesday's King's Cup semi-final against Valencia despite missing training on Monday to have tests on his kidneys, the La Liga club said.
'Every night before I sleep, I imagine myself on a football field.'
Messi, who failed to turn up for pre-season training on Monday, had previously labelled his side 'weak' and 'inconsistent' after surrendering the league title to rivals Real Madrid.
Lionel Messi said on Wednesday he was delighted to have signed for French club Paris St Germain and that he is ready to help the team clinch their first ever Champions League title.
Between trying to compose himself, wiping away tears and facing a long standing ovation, it took Lionel Messi more than a minute to start his farewell news conference on Sunday at FC Barcelona, where the Argentine has spent all of his playing career.
Lionel Messi's passionate performances at the Qatar World Cup are earning him oodles of love from Argentines, but their old favouritism for Diego Maradona may resurface unless he brings home the trophy on his final attempt.