Jozabed joined Fulham from Rayo Vallecano for an undisclosed fee in August 2016, but made only eight appearances for the Championship club.
The 26-year-old Spaniard last featured for the Cottagers as a substitute in a 2-1 loss to QPR on 1 October.
He joined Celta Vigo on loan in January, scoring twice in 28 appearances in all competitions.
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La Liga side Celta Vigo have signed Fulham midfielder Jozabed for an undisclosed fee.