WHY HAS PAULINHO BEEN GIVEN ON LOAN TO HIS OLD CHINESE CLUB.?

Even though Paulinho had a horrible time in England with the English club Tottenham Hotspurs, he was considered a flop there but he went to China and got his career back on track and was then purchased by the Spanish giants Barcelona for over thirty million pounds, after playing for Brazil at the 2018 world cup in Russia, he has re-joined his old club. in China on a year long loan, and the Chinese club can even go and buy him for 44, forty four million pounds., that is more than what Barcelona paid to buy him in the first place. But why were Barcelona willing to sell Paulinho. Now according to F.I.F.A rules clubs are supposed to have a certain number of footballers from the E.U ad none E.U countries , so they are forced to make way by selling players tomake wayfor new ones as Arthur will be joining Barcelona from Gremio soon. So Barcelona are selling Andrea Gomes to make way for Willian who might join Barcelona from Chelsea.