Everton sold Gerard Deulofeu to Barcelona during the summer transfer window.

According to Mundo Deportivo, Barcelona are already looking to cash in on Gerard Deulofeu for €20 million, and Everton should consider bringing the Spaniard back to Goodison Park.
Everton were forced to sell Deulofeu in the summer, when Barcelona activated the buy-back clause in the winger’s contract.
Deulofeu has struggled to make an impact back at Barcelona, despite Neymar’s move to PSG giving him a chance to stake a claim for a first-team spot.
The Catalan giants are now said to be prepared to offload him, and Everton may be wise to consider making another move to bring him back to Merseyside.

Granted, Everton would have to pay a bigger fee than they sold him for in the summer – but €20 million is still not a particularly exorbitant price-tag in the modern day market.
And Deulofeu could still be a very useful player for Everton in future years, if he fulfils his potential.
The 23-year-old’s technical ability has never been in doubt, although he does need to work on his end product.

Deulofeu could have offered Everton a more direct outlet this term though, and Ronald Koeman’s team would surely be a bigger threat with him involved.
And if Barca are tempted to sell, then Everton should be considering making a swift move to bring Deulofeu back to Merseyside.
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