Barca keen to sign in-form attacker.
According to Spanish source Fichajes.net, it could cost the Catalan giants £22m to re-sign the 28-year-old, who had a spell at the Nou Camp earlier on in his career.
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Although Nolito initially struggled to establish himself at Barcelona, he has shone at Celta and is well known by manager Luis Enrique, who left the club for the Nou Camp last summer.
The pair could now be reunited as Barca look set to spend big in the winter market after the end of their FIFA-imposed transfer ban.