United were also said to be put off by the conduct of Mina's representatives during negotiations while they also rejected a proposal that included Portugal midfielder Andre Gomes, who also joined Everton on deadline day from Barcelona.
'It's time, at least for me, to stop thinking about the market.
It looks like Mourinho is keen to be reunited with Zouma at Old Trafford but it remains to be seen whether Chelsea will agree to sell to Manchester United or pursue a loan deal with Everton. This is a great opportunity for me and I am looking forward to competing here. They also bought in left-back Joe Bryan from Bristol City, plus three players on loan - goalkeeper Sergio Rico from Sevilla, Atletico Madrid forward Luciano Vietto and United's Timothy Fosu-Mensah. I am also determined to do my best for Everton'.
"I chose Everton because they gave me a lot of confidence".
Silva has been desperate to bolster Everton's defence all summer and had been linked with a number of targets, such as Manchester United's Marcus Rojo and Newcastle's Jamaal Lascelles, but Mina was his top target.
The Colombia centre back, who scored against England at the World Cup, was the main arrival in a busy end to the transfer window that included deals for another Barcelona player, André Gomes, and Brazil winger Bernard.
The French defender played 37 games for the Potters and him returning to the Premier League makes sense for both the club and the player.