LIVERPOOL, England - Everton has signed Gerard Deulofeu from Barcelona for 6 million euros ($6.7 million), with the exciting winger returning to the English club after a successful season-long loan spell in 2013-14.

Everton announced the transfer on Thursday after the 21-year-old Deulofeu signed a three-year contract.

The deal includes a buy-back clause should Barcelona make an offer to Everton meeting certain requirements within the first two years of the contract. Barcelona also has the right of first refusal should Everton decide to sell Deulofeu.

Deulofeu came through Barcelona's famed La Masia academy but failed to establish himself in the first team. He spent last season on loan at Spanish side Sevilla.

Everton manager Roberto Martinez described Deulofeu as an "incredible footballing talent."

Everton has also signed midfielder Tom Cleverley from Manchester United this off-season.