A whole host of lucrative transfer deals will be concluded during the summer transfer market as clubs across Europe look to strengthen their squads ahead of next season.
One potential option will be the use of the free transfer market with some eye-catching players set to leave their current clubs when their contract expires in June.
Of course, the term free transfer can be misleading because these players can demand a higher signing-on fee and weekly wage given the lack of transfer fee involved in their contract agreement.
But there are a whole host of intriguing options for clubs looking to add genuine quality to their squads including two French World Cup winners, an established Argentina international and two Champions League-winning defenders that are currently plying their trade in the Premier League.
With the help of the Transfermarkt website, LondonWorld takes a look at the ten most valuable players out of contract at the end of the current season.
1. Matthias Ginter - £21.6m
Clubs across Europe are vying for the German international's signature with his deal at Monchengladbach set to expire in the summer. Newcastle were credited with an interest in the defender during the winter window but they will face some stiff competition with Bayern Munich and Liverpool also understood to be interested. Photo: Dean Mouhtaropoulos
2. Boubacar Kamara - £22.5m
The highly-rated Marseille star will see his current contract come to an end this summer - but he will not have any trouble finding a new clubs with serious interest from the Premier League and Serie A.
3. Andrea Belotti - £25.2m
The Italian international striker is attracting interest from Serie A, La Liga and the Premier League as his current deal with Torino comes to an end in June. Photo: Getty Images
4. Ousmane Dembele - £27m
The French winger looked all but certain to leave Barcelona this summer and the likes of Newcastle United, Chelsea and Manchester United are said to be keen on taking him to the Premier League this summer. But there has been recent speculation suggesting Barcelona will offer him a new deal before the end of the campaign. Photo: Getty Images