Mina scored half of Colombia’s six goals at the World Cup in Russia as they reached the last-16 before losing to England .
He only joined Barcelona in January for £10.44m from Brazilian side Palmeiras, and played six league and cup games as Barca were crowned 2017-18 La Liga champions.
Gomes was part of the Portugal squad that won Euro 2016. He has spent two years at Barcelona making 46 league appearances.
He said Everton’s Portuguese boss was a big factor behind his arrival.