Barcelona president Josep Maria Bartomeu says more signings are anticipated before the close of the La Liga transfer window as speculation over a bid for Neymar continues.
The Spanish champions secured the arrival of Junior Firpo from Real Betis on Sunday in a deal that could be worth €30 million (£27.4m/$33.3m).
Barca have spent upwards of €230m (£210m/$256m) on new players in 2019, with Antoine Griezmann, Frenkie de Jong, Neto and Emerson among those to arrive in the close season.
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They are reportedly in negotiations for the season-long loan of Paris Saint-Germain star Neymar, who is pushing to leave the Ligue 1 champions just two years on from his world-record €222m (£200m/$249m) move from Barca.