The Mancunian club are closing in on a £60m deal for Tottenham Hotspur defender Toby Alderweireld. Alderweireld is keen on the move, with a massive bump in pay expected to come his way upon the transfer's completion.
The 20-time English champions have also shown an interest in Leicester City's World Cup star Harry Maguire in the current transfer window.
The former Porto manager has voiced his frustration many times in pre-season about the Old Trafford outfit's inability to get deals over the line, with central midfielder Fred the only big name to arrive this summer.
United representative Matt Judge had travelled to Barcelona last week in order to thrash out a deal, but realistically, Mina never appeared to be on United's radar - and was seen more as a smokescreen as United worked on an Alderweireld deal in the background.
After negotiations now, there has been a breakthrough between the two clubs.
Injuries and distractions due to the contract situation meant the former Southampton man went through a rough patch and lost his place to new signing Davinson Sanchez in Mauricio Pochettino's starting XI.
The 83-time capped Belgium global is expected to finalize his move to the Old Trafford in the next couple of days. The towering defender is regarded as one of the best in his position in the Premier League, despite going through a hard 2018-19 season.
Mina impressed for his country at this summer's World Cup, scoring three goals as Colombia reached the second round, before being eliminated by Gareth Southgate's England side. If he moves to Manchester United and performs well, he could be a superstar there and Mourinho's defensive style of play might suit him and he could be an apt leader of the defence of the Red Devils.