Lionel Messi has ruled out the possibility of participating in the Paris Olympics, conceding "it would be too much to play two straight tournaments".

Messi is gearing up for Argentina's Copa America title defence, which begins against Canada on June 20, while they will also face Chile and Peru in Group A.

The final takes place on July 14, with the Olympic tournament beginning in Paris 10 days later. 

With three overage players allowed per team in the primarily under-23 event, leading to speculation that Messi could feature for La Albiceleste.

However, the 36-year-old, who was a gold medallist in Beijing 16 years ago, revealed he would not be partcipating following a discussion with Argentina under-23s coach - and former team-mate - Javier Mascherano.

"I talked to Mascherano and the truth is we both understood the situation," Messi told ESPN.

"It's hard [to think about the Olympics right now] because we're in Copa America. It would be two, three straight months of not being with the club, and more than anything, I'm not at an age to be in everything.

"I have to choose carefully, and it would be too much to play two straight tournaments. I've been very lucky to play in the Olympics, and win it together with [Mascherano].

"It was a wonderful experience on a football level. Olympics, under-20s, memories I'll never forget."

Graham Arnold revealed he had "visualised" Australia's impressive 2-0 win over Argentina in their Olympics opener – and said keeping Lionel Messi and Diego Maradona out of conversations was all-important.

Australia head coach Arnold saw his Olyroos team strike a major victory for the underdog with their Tokyo 2020 success in Sapporo, where goals from Lachlan Wales and Marco Tilio did the damage.

Although the Argentina team this year does not carry the same star quality as the 2004 and 2008 sides that featured Carlos Tevez and Lionel Messi respectively, the South Americans were expected to be on a high after their senior side lifted the Copa America trophy earlier this month.

Arnold's Australian troops were highly impressive in the Group C tussle, however, even though their coach still saw room for improvement.

"Nobody would have given us a chance apart from us. I've been visualising this performance for the last couple of weeks, I even visualised the score," Graham said.

"I believe in these boys and I believe so much in them that I'm not happy with our overall performance. I was happy with the work rate, the energy, but at times we turned over the ball too simply and too easily. We need to improve as we go on, and we will."

Arnold pointed to Australia having only one previous Olympic men's football win in the 2000s, a 5-1 win over Serbia and Montenegro in 2004 at the Athens Games.

"It's a great win, but we've done nothing yet. It's three points, we're off to a great start, the first win, but the important thing is improvement," the coach added.

"We didn't mention the name of the opposition, it's all about us. Sometimes when you mention a nation like Argentina's name, everyone just starts thinking of the players, Diego Maradona, Lionel Messi, and Copa America champions.

"It was more about focusing on ourselves for the last week and making sure all the players knew their roles, their jobs and building a lot of belief in the players that we could go out there and put in a good performance and win the game."

He vowed Australia were "here to compete for a gold medal" and offered up the victory to those locked down in Australia during the ongoing COVID-19 crisis.

"It was probably the last thing I mentioned to the players before they went on the pitch," he said. "Australia, New South Wales in particular, is going through a very tough time at the moment with COVID, with lockdown and I just said to the boys, 'A lot of families are locked down at home, let's put a smile on a lot of Australian faces tonight, give them a performance they will remember'.

"I really expect that a lot of people back at home who didn't give us much chance of winning before really enjoyed that. I expect we put a lot of smiles on a lot of faces ... for tonight anyway."

When we look ahead to the Olympics, we usually think about track & field sports, swimming, cycling, maybe even wrestling and boxing.

Given it dominates so much of the sporting agenda for the rest of the year, football may not be among those sports we initially associate with the Olympics, but it has offered numerous stars the opportunity to show their talents to a global audience and to potentially take home a coveted medal.

Of course, the Olympic football tournament is geared more towards lesser-established players, given the age-restriction rules in place.

While teams are usually allowed no more than three players over the age of 23, that age limit has been increased to 24 so not to penalise those around the cut-off who may well have missed out as a result of the 12-month delay caused by the coronavirus pandemic.

Superstars such as Neymar, Kylian Mbappe and Lionel Messi may be missing, but there are still plenty of familiar faces. Barcelona's Pedri will be involved after starring for Spain at Euro 2020; Brazil great Dani Alves is joined by Arsenal and Everton forwards Gabriel Martinelli and Richarlison; and dynamic Milan midfielder Franck Kessie will be the Ivory Coast's go-to man.

But there are plenty of other relatively unheralded talents ready to make you sit up and take note. Below, Stats Perform takes a look at 10 of them.

Facundo Medina, 22, centre-back – Argentina

It's fair to say Lens defender Medina has enjoyed a rapid rise to prominence. The French side brought him in from Club Atletico Talleres just last July and he's already being mentioned as a potential target for clubs like Manchester United.

While he may not be the most physically imposing central defender, he's a good technician, which is demonstrated by his ease on the ball – only three Ligue 1 centre-backs (more than 1,000 minutes played) embarked on more ball carries per 90 minutes (20) than Medina, while his average of 56 successful passes per game was more than any of his team-mates.

Bryan Gil, 20, winger – Spain

La Roja's squad is packed with familiar names – as many as six were at Euro 2020, and that doesn't include the likes of Marco Asensio, Carlos Soler and Dani Ceballos. But of the players with less global recognition, old-fashioned left-winger Bryan is arguably the most exciting.

He just completed a very encouraging loan spell away from Sevilla with Eibar, where his direct and brave style of play was frequently on display, with only Lionel Messi, Javi Galan and Yannick Carrasco attempting more dribbles than him (132). In January he became only the second player born this century to score a LaLiga brace, and he won his first senior Spain caps this year.

Diego Lainez, 21, winger – Mexico

It feels like Lainez has been tipped for a big future for a long time now – after all, he first burst on to the scene with Club America four years ago. Two-and-a-half years into his time in LaLiga with Real Betis, he's yet to really establish himself with only 13 of his 48 league appearances coming as a starter. He's still not scored a goal.

But there's no doubting he's a talent. In 2020-21, he attempted a dribble every 17 minutes, which was a record among Betis players and ahead of even Nabil Fekir (21 mins). Lainez is an entertainer and clearly gifted, but perhaps lacking consistency in his end product. Who knows, as one of the more talented players in the Mexico squad, being seen as a go-to player may aid his quest for maturity.

Teji Savanier, 29, central midfielder – France

Savanier is the odd one out in this list, given he's the only one who actually counts towards an over-age quota, though it could be argued that it's to players like him that playing at the Olympics may matter the most. Savanier's never even played for France's youth teams, let alone the senior side, and he only made his top-flight bow as recently as 2018, but he's one of those central midfielders that's a joy to watch with his wonderful ability on the ball.

He has completed 58.4 per cent of his 279 dribbles in Ligue 1 since July 2018, which is bettered by only three players (more than 150 attempts) in the same period. For greater context, Neymar's completion rate in that time is 52.5 per cent. Savanier should also provide France with a threat at set-pieces, as only Benjamin Bourigeaud created more chances (40) from such situations than the Montpellier star (37) in 2020-21.

Thiago Almada, 20, attacking midfielder – Argentina

La Albiceleste's squad boasts numerous talented young attacking players – Ezequiel Barco, Pedro de la Vega, Ezequiel Ponce, but Almada's arguably rated highest of the lot.

A diminutive attacking midfielder from Carlos Tevez's old neighbourhood in Buenos Aires, Fuerte Apache, Almada is skilful, explosive and creative. Among players born this century, Almada boasts the best chances created per game frequency (two) in the Copa Libertadores (at least two games played) this season, as well as being the youngest player to have netted at least twice in the competition in 2021.

Claudinho, 24, forward – Brazil

All roads point to Europe for Claudinho, who looks poised to be the first major export of Red Bull Bragantino, the energy drink giant's Brazilian club. While no move has been confirmed yet, it seems only a matter of time before RB Leipzig look to bring him over to Germany.

After all, he was the joint-top scorer in the 2020 Brasileirao (18 goals), with his finishing abilities highlighted by the fact a league-high seven of those were scored from outside the box. Claudinho also created 25 more chances than anyone else in the division, and scooped both the Young Player of the Year and MVP awards.

Nathanael Mbuku, 19, winger – France

He may not necessarily be a starter for Les Bleus, given they've plenty of attacking talent in the squad, but at the very least left-winger Mbuku could be an interesting option from the bench. Reims are reported to already value him at €15million, and he has previous when it comes to excelling in national team colours – he netted five goals in six games as France finished third at the 2019 Under-17 World Cup.

Mbuku enjoyed a smattering of Ligue 1 appearances that season, though it was in 2020-21 that he truly established himself, making 28 starts – that was tied with Eduardo Camavinga for the most by a player born in 2002 or after. He caught the eye with his ability to beat a man, completing a highly respectable 58.1 per cent of his 74 dribbles last term, a completion rate bettered by only 10 players who attempted at least 70.

Felix Uduokhai, 23, centre-back – Germany

Wolfsburg plucked Uduokhai from 1860 Munich in 2017 with much expected of him. He fell well out of favour in his second season before moving on loan to Augsburg, who triggered their purchase option on him last year. Since moving to Bavaria, he's hardly looked back.

He earned his first senior call-up to the Germany team in November and now there is chatter that some of the Bundesliga's biggest clubs are circling for him again. Whoever gets Uduokhai will land an imposing centre-back whose 102 aerial wins was the fourth-highest in the league last term, while only Amos Pieper (160) bettered his 157 clearances.

Brenno, 22, goalkeeper – Brazil

For years, goalkeeper was considered the only position where Brazil struggled to develop world-class players, though Alisson and Ederson have firmly disproved that notion and Brenno could be another to keep an eye on.

In the 2021 Brasileirao, Brenno is averaging the fourth-most amount of saves per 90 minutes (3.5) among those to have played at least four times, and is reportedly interesting Portuguese clubs. A solid showing in Japan might see a potential transfer sped up.

Amad Diallo, 19, winger – Ivory Coast

Manchester United fans will be eager to get a good look at Amad during the Olympics, given they only got glimpses of him in 2020-21 after joining from Atalanta. Amid those eight appearances, he certainly showed flashes of his exciting ability and silky footwork, but they will hope to see some performances of a little more substance.

As much as anything, it could be an opportunity for Amad to earn himself a loan move or prove to Ole Gunnar Solskjaer he's worth keeping around. Jadon Sancho's arrival will likely further impact his exposure to first-team football, but impressing in Japan might encourage his manager to use him as a regular back up to the England international, with Mason Greenwood moved into a central position.