The signing of Frenkie de Jong is an important one for Barcelona, coach Ernesto Valverde said.
Frenkie de Jong, 21, admitted talks were held with PSG and Manchester City prior to his Barcelona agreement.
Manchester City manager Pep Guardiola is determined for his side to become serial winners following Wednesday's EFL Cup semi-final win.
Ernesto Valverde stuck by his decision to rest Lionel Messi despite Barcelona's Copa del Rey loss to Sevilla.
Missing Cardiff City striker Emiliano Sala was the subject of an emotional tribute by Sevilla goalscorer Wissam Ben Yedder on Wednesday.
A brace from Santi Cazorla halted Real Madrid's momentum as Luis Garcia's side claimed a 2-2 draw in the first LaLiga match of 2019.