Paris Saint-Germain have completed the signing of 15-year-old former Barcelona youth player Kays Ruiz.
The French attacking midfielder had signed an agreement to join the French giants in 2015, after leaving Barca in the wake of the transfer ban imposed on the club by FIFA.
Ruiz had been linked to a move to Lyon, his hometown club, but it is the capital club that have snapped him up on a three-year youth contract.
"The youth contract marks a new stage in the training and progress of the young player," PSG said in a statement.
"This contract also serves to deepen even further the bond of trust between the playmaker and his club of two years - Kays signed a pre-youth academy agreement with Paris Saint-Germain when he returned to France in 2015."
The transfer of the midfielder, who has been involved in the France Under 16 set-up, follows just a few months after a heated summer between Barcelona and PSG.
After Barca saw their pursuit of PSG's star midfielder Marco Verratti at the start of the transfer window end in disappointment, they were enraged by the Ligue 1 giants' €222 million signing of Neymar.
The world-record fee PSG splashed out to lure the Brazil star from Camp Nou has been heavily criticised by La Liga and Barca, who are suing Neymar for breach of contract and in turn being counter-sued by him .