The Sweden global won't go charging into challenges to deter opponents and win the ball back for his side, but rather use his exceptional positional sense to ensure attackers don't get the better of him.
United have reportedly agreed on a fee with Benfica for the Swedish defender, with only his medical left to complete.
Lindelof penned a new contract at the Estadio da Luz earlier this year after seeing a proposed move to Old Trafford collapse, which helped to drive up his valuation past the £30m mark.
Despite often captaining United under Louis van Gaal and being voted the club's Players' Player of the Year by his colleagues in 2015/16, Smalling has struggled to impress Mourinho, especially after suffering a number of injury problems during the boss' debut season.
Continuing to praise him by saying he's one of the best defenders, along with his partner, he'd faced in the a year ago.
This means that there will be no more room for Smalling, who has been at the club since 2010.
How did Smalling do last season?And his stunning beaut of a girlfriend, Maja Nilsson, is gaining a fair amount of traction as well; Maja is set to become the latest addition to the Premier League WAG brigade, so fans are quite happy about that as well.
Wilkins told Sky Sports, as quoted by Metro: "We've got young Keane has done exceptionally well at Burnley, we're looking to bring him back at Manchester United for £28m, all of a sudden Lindelof is £30m".
He's a little versatile, having made appearances at centre-back, right-back and defensive midfield but many have claimed his best position to be at centre-back.
Mourinho, who also lifted the League Cup but finished a disappointing sixth in the Premier League, was delighted to have bolstered United's defense. And it certainly comes across as a transfer the great man himself would approve of.