The business did not end there though after Brazilian free agent Bernard finally completed his move to Merseyside.
Barcelona said they reserve the right to buy Mina back, while midfielder Gomes, 25, has cost a £2m loan fee.
"It is important that the club want to fight for something". When I found out about this opportunity and what the manager wanted out of me I was happy.
BBC reports that Mina's arrival means Everton have spent more than £60m in the past two weeks following the initial £35m arrival of Brazilian winger Richarlison from Watford, a deal that could rise to £50m.
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"If he is in a better position and moment than the others then, for sure, he will play".
Mina, the Colombia centre-half who scored against Jordan Pickford at the World Cup, was a priority signing for Silva amid concern over his central defensive options.
The 23-year-old only joined Barcelona from Palmeiras in the January transfer window.
Gomes was part of the Portugal squad that won Euro 2016. The added attraction, he says, is helping Everton progess under Marco Silva.
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Mina's stock is high after he caught the eye during the World Cup - he scored a last minute equaliser against England in the last 16 tie, one of three goals he netted in Russian Federation - and he revealed the lure of the Premier League was impossible resist.
"FC Barcelona and Everton FC have reached an agreement over the loan of the player André Gomes for the 2018/19 season", it read.
Manchester United target Yerry Mina undergoes Everton medical in Barcelona
Everton have won the race for his signature with the attacking midfielder signing a four-year contract. Another addition from the Nou Camp, midfielder Andre Gomes , joined on a season's loan.