Since the establishment of the Bosman rule in 1995, the best football players in the world are able to walk away from their club for free upon the expiry of their contract.
This will be the case in the summer of 2025 with a number of high-profile names potentially available for free.
We examine the top 10 most valuable footballers on the planet whose contracts are currently set to run out at the end of the 2024/25 season.
The most valuable player in world football whose contract is set to expire in the summer of 2025 is Liverpool right-back Trent Alexander-Arnold.
A local boy who graduated through the club's youth academy, Alexander-Arnold has developed into a mainstay in the Liverpool first team with his phenomenal technical quality providing the Reds a unique creative outlet at right-back.
Amidst significant reported interest from Real Madrid, Alexander-Arnold's future at his boyhood appears unclear as he attempts to finish the 2024/25 campaign with silverware at Anfield, with Arne Slot's side still in contention for three major trophies - the Premier League, UEFA Champions League and the EFL Cup.
Alexander-Arnold's Liverpool teammate Mohamed Salah is number two on this list, with the Egyptian also yet to put pen to paper on a new contract at Anfield.
Ex-Chelsea player Salah joined Liverpool from Roma back in 2017 and has represented one of the best players in world football ever since.
A three-time Premier League Golden Boot winner, Salah is now regarded as one of the best players in the competition's history such is his consistency in front of goal.
Now 32 years of age, Salah is showing no imminent signs of slowing down as he leads Liverpool's trophy bid this season with unrelenting consistency in his performance levels.
Blooded into the Bayern Munich first team by Pep Guardiola during the Catalan's reign as manager of the Bundesliga giants between 2013 and 2016, Joshua Kimmich has developed into one of the faces of German football.
A versatile operator who most commonly plays in a deep-lying midfield position, Kimmich has won essentially everything there is to win as a Bayern player - including eight Bundesliga titles and the UEFA Champions League in 2020.
Having yet to agree a new contract with Bayern, perhaps the 30-year-old is eyeing a new challenge as his career enters its swansong years.
If there is one position on a football field in which elite talent is particularly coveted it is in attack, with the potential free agency of Lille hitman Jonathan David in the summer of 2025 set to make him a player hot in demand.
A Canada international. the 25-year-old striker has proved his goalscoring credentials both in Ligue 1 and the UEFA Champions League so far this term and is likely to have a long line of suitors at the end of the 2024/25 campaign.
A player who has shone at two of the biggest clubs in Europe during his career in the form of Manchester City and Bayern Munich, Leroy Sane is one of the most menacing wingers in Europe when at the top of his game.
The 29-year-old's influence in Bavaria appears to be waning, however, and the Germany international may view the summer of 2025 as an ideal point in which to take his distinguished career in a fresh direction.
There is unlikely to be a shortage of interested parties should a player of Sane's ability become available, with the Schalke youth product still an elite attacking player.
An iconic Premier League figure, Kevin De Bruyne's storied association with English football could soon come to an end with the Belgian set to run out of contract at Manchester City in the summer of 2025.
One of the outstanding midfielders in world football of his generation, the magisterial De Bruyne has accrued six Premier League titles as a Manchester City player.
However, with it becoming increasingly clear that the 33-year-old is no longer the player he once was, De Bruyne looks primed to call an end to his City career at the end of the 2024/25 campaign and likely finish off his career in a less physically demanding league.
A member of Bayer Leverkusen's sensational Bundesliga-winning side who went the entire 2023/24 domestic season unbeaten, Jonathan Tah's contract at Xabi Alonso's side is set to expire in the summer of 2025.
With uncertainty continuing to surround manager Alonso's future at Leverkusen, the 2024 Bundesliga champions may also find it to difficult to preserve the services of one of their key players as Tah weighs up his options.
At the age of 29, Tah may not have many new contracts left in his professional career and may be tempted to jump ship from Leverkusen this summer should an appetising alternative offer land his way.
If this list was measured on quality alone, there is no way Liverpool's titanic Virgil van Dijk would be as low as eighth.
The reality is the Netherlands captain will turn 34 this year and thus his transfer value is not as high as some of his more youthful counterparts.
Age aside, Van Dijk is still a player at the top of his game as he eyes fresh honours with Liverpool at the business end of the 2024/25 campaign.
Part of arguably the most effective midfield unit in Serie A this season alongside Stanislav Lobotka and Scott McTominay as Napoli target a shock second Scudetto in three years, Cameroonian midfielder Andre-Frank Zambo Anguissa's performances in Italy have drawn widespread plaudits.
A complete midfielder with a lovely blend of technical and physical attributes, Antonio Conte's Napoli will no doubt be desperate to retain the ex-Fulham man's services ahead of next season.
An Eredivisie winner with PSV Eindhoven in 2023/24, French central defender Olivier Boscagli will run out of contract with the Dutch giants at the culmination of the 2024/25 season.
As a left-footed defender who is comfortable in possession, 27-year-old Boscagli boasts a skillset which will likely be admired across Europe, with Borussia Dortmund, Brighton and Tottenham reported as possible suitors for the Nice youth product.
(*Transfer values measured by Transfermarkt.co.uk).