The Red Devils failed to get their hands on him in the end, however, with Dortmund’s six-figure asking price proving too steep for them in the current climate.
They were not the only Premier League side tipped to sign the 20-year-old, as reports earlier this year suggested Chelsea were also circling.
Yet the Blues instead decided to fork out a combined £136m on German duo Timo Werner and Kai Havertz, who are taking some time to adjust to English football.
While Werner and Havertz swapped Bundesliga for the Premier League, Sancho remains in Germany’s top flight with Dortmund.
He has spent three years at Signal Iduna Park since departing Manchester City’s youth setup in 2017, scoring 36 goals in 106 appearances and becoming a key player for the club.
Sancho is plying his trade this term alongside fellow English star Jude Bellingham, who made a similar move from England to Germany in the latest transfer window.
Bellingham, 17, sealed a £25million switch to Dortmund from Birmingham after just one season in the latter’s first team, which saw him rack up 44 appearances.
And since his arrival, Sancho has seemingly taken on the role of the midfielder’s big brother.
Bellingham said in an interview with German outlet KICKER: “Not just because [Sancho] comes from the same country as me, or because he speaks the same language. Even more important is how he puts his arm around me, but also around the other younger players, how he strengthens us in our abilities, gives us confidence.
“He’s a great role model for English players my age. To get praise and encouragement from him means a lot to me. That helps me a lot.”
Sancho is clearly proving an important player both on and off the pitch, which will only make him an even more attractive option for the likes of Chelsea next summer.
Nevertheless, football.london believe it is not out of the question for both him and Bellingham to link up at Stamford Bridge in the future.
The duo are likely to target moves back to England at some stage in the future, with Sancho expected to finally seal a return next summer, and Frank Lampard’s side are bound to be at the front of the queue when they do.
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If Chelsea remain a Champions League club at the end of this season, their wealth and London base will make them one of the leading contenders to prise Sancho away from Dortmund.
And with the winger clearly serving as his mentor out in Germany, Bellingham could follow him to west London.