The 27-year-old Colombian international was signed from Sampdoria for a club record fee of £17.5million (with potential add-ons) last summer, and he ended the La Liga campaign with seven goals and an assist in 17 starts.
The 22-year-old Spanish striker failed to impress at Goodison Park after completing a £5.2 million switch from Malaga last summer, scoring just once before getting loaned to Sevilla for the rest of the season in January.
With Sandro's Everton future up in the air, a move for Muriel could interest all parties involved.
Muriel is huge favourite to cover for AS Monaco's Colombian hitman Radamel Falcao at the World Cup having made the preliminary 35-man squad, and Everton and other clubs' scouts will surely be watching him closely.
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