"There's space [for a new striker] with Munir leaving", Valverde said. "That he's a great player, that he's at another team and that we respect that a lot". "The window's open and we'll see if we can bring someone in".
Barca sold the Brazil worldwide to PSG for a world-record fee of £200million in the summer of 2017 but are rumoured to be interested in re-acquiring his services.
Munir has had loan spells at Valencia and Deportivo Alaves over the previous two seasons and has failed to force himself into Ernesto Valverde's plans this term, making just 11 appearances in all competitions, scoring two goals.More news: Chelsea discussing Hudson-Odoi clause and have agreed two transfer deals
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The Catalan giants' La Liga rivals have now confirmed via their official club website that the 23-year-old has signed a contract with them, with a fee for the winger reported to be in the region of €1m.
Now third in La Liga, seven points behind leaders Barcelona, Sevilla are in action on Sunday when they face Athletic Bilbao away.
A midweek defeat to Levante in the Copa del Rey round of 16 arguably showed Barca's need for depth in their forward line.