The French club has gone ahead of the likes of Chelsea and Bayern Munich to snap up Leandro Paredes from Zenit St Petersburg on a deal through to 2023.
PSG who would square up against United in the champions league reinforced the team by adding the 24-year-old to their ranks.
The Argentina international would head for Parc des Princes and Thomas Tuchel is happy with the signing.
The Blues have seen Cesc Fabregas head for Monaco, while the French giants are preparing to lose Adrien Rabiot as a free agent and are without the injured Marco Verratti.
Paredes has now arrived to bolster the ranks at PSG, with the South American telling the club’s official website: “I’m very proud to be joining Paris Saint-Germain.”