Ernesto Valverde accepts the possibility of Neymar returning to Barcelona from Paris Saint-Germain is "unlikely" but refused to rule it out completely.
Neymar left Barca under something of a cloud when PSG activated his €222 million (£196m/$255m) release clause in 2017, making him the most expensive player of all time.
The Brazil star has consistently shone since moving, scoring 27 and setting up 16 in 28 Ligue 1 matches, though the player is said to have struggled to settle in the French capital.
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Transfer speculation has constantly swirled around the 26-year-old, with a switch to Real Madrid looking a real possibility at times prior to the World Cup.