Barcelona have completed the signing of Spain left-back Junior Firpo on a five-year contract from Real Betis for a fee which could rise to £27.5m.
Barcelona have included a £183m buy-out clause in the Dominican-born 22-year-old’s contract.
22 year old featured in 29 games last season and was part of Spain’s U21 European Championship-winning side in June.
The Spanish champions previously signed France forward Griezmann from rivals Atletico Madrid for £107m in July.
Valverde’s side have also been bolstered by the additions of Frenkie de Jong from Ajax, goalkeeper Neto from Valencia and defender Emerson from Brazilian side Atletico-MG.
On Tuesday, the club sold Brazilian winger Malcom to Zenit St Petersburg for £36.5m after a season at the club.