For three generational stars, this World Cup is likely to be a swansong. Lionel Messi, Neymar and Cristiano Ronaldo will all feature in what could be their final appearance on football’s biggest stage.Now 38, Messi is still delivering the goods on a regular basis for Inter Miami in Major League Soccer, while Ronaldo is doing the same for Al-Nassr, where he recently won the Saudi Pro League title for the first time.Neymar is also deep into the twilight of his career. The Brazilian forward made a sentimental return to Santos last year, 12 years after he left his boyhood club for Barcelona. Injuries have been an issue recently, but there are still moments of magic in his play.The Messi situationPriced at 16/1 to win the Golden Boot, Messi is clearly fancied to make an impact on another World Cup with only four players (Kylian Mbappe, Harry Kane, Mikel Oyarzabal and Erling Haaland) shorter to score the most goals.As a team, Argentina still revolves around Messi, who registered more goals and assists (11) than any other player in CONMEBOL qualifying. He also averaged more shots per 90 minutes and created more chances, highlighting just how central he is to Lionel Scaloni’s side.Anyone who has recently watched Messi for Inter Miami will also know how he is peaking at the right time for this summer’s tournament. Indeed, Messi signed off for the World Cup break in MLS with 12 goal contributions in just five games.While Messi came off early in his final Inter Miami game with an injury, the 38-year-old looks to be in the best shape since the last World Cup when he and his Argentina teammates got their hands on the trophy.