The youngster has impressed this season on-loan with Genoa and earned a first Belgium cap against the Republic of Ireland last week.
TMW says Wolves have expressed interest in De Winter and have now been joined by Everton.
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Interestingly, Genoa's owners 777 Partners are a step away from buying Everton.
At Genoa, De Winter is just two appearances away from triggering a 8m permanent option.