As expected, Paris Saint-Germain have triggered an option to buy in Nuno Mendes' loan agreement, signing the Sporting CP left-back on a permanent basis for around £34m.
The 19-year-old joined PSG on an initial loan on transfer deadline day last summer, going on to make 37 appearances in all competitions as Mauricio Pochettino's side reclaimed their Ligue 1 crown and suffered an agonising Champions League exit at the hands of Real Madrid.
That initial agreement included a €7m loan fee, and Les Parisiens have now triggered a €40m (£34m) option to buy, with Mendes signing a contract until 2026 - when he will still be just 23.
In a statement, PSG said: "Paris Saint-Germain has completed the permanent transfer of Nuno Mendes. The Portugal left-back is now tied to the club from the French capital until 30 June 2026."
The structure of the agreement is the same as the deal that saw the Ligue 1 champions sign Danilo Pereira permanently last summer following an initial loan from Sporting's Liga NOS rivals Porto.
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Mendes was nominated for Ligue 1's Young Player of the Season award and was named as the best left-back in the division despite his tender years.
PSG are set for another busy summer as they look to build the team around Kylian Mbappe, who rejected Real Madrid to sign a new three-year contract at Parc des Princes. There could be upheaval behind the scenes too, with the futures of manager Pochettino and sporting director Leonardo in doubt.