United spent twice as much on Lindelof as Leicester did Maguire, while Robertson cost Liverpool £8m; both would have been assets to Mourinho this season.
There are an abundance of players in the lower leagues now who have the talent to step up into the Premier League; James Maddison, for example, is a Coutinho clone and would add lacking flare to the midfield, but the club will rather spend on Milinkovic-Savic. Lewis Cook has been putting in Premier League performances comparable to the ones Fred has in the Ukrainian pub league, but the club will go for the Brazilian because it’s deemed sexier; that epitomises why the club has failed to win the league in the past 5 years, despite spending huge amounts to acquire exotic named mercenaries.
The club under Mourinho and Woodward is at odds with its own identity, hence the relative failure - those two will prioritise Sandro, but Sirs Matt and Alex would have taken great pride in acquiring and developing Tierney.
Buying fullbacks from Serie A is moronic - Darmian was seen as bordering world class at Torino, while Kolarov was just named left back of the season there, as he was before his dubious spell at City. Sandro is another risk, like Maicon was when he flopped at City after being seen as the best rightback in Europe during his time in Italy, barring being rinsed by a Premier League winger in Bale.
Tierney is the best, most compatible fullback United could acquire this summer.