The 18-year-old is reaping the rewards of taking the path less followed, having made the courageous - if at the time slightly controversial - move from Manchester City to Dortmund last summer. Often foreign players, even young ones, seem more desirable to clubs.
And it's clearly an ethos that Southgate is going to stick with based on his squad selection for England's Nations League games with Croatia and Spain over the next few days.
Although Sancho's overall statistics might not be as impressive given the fact that he has been most often used as a super-sub, we can certainly expect the teenager to become a more prominent part of the Dortmund starting lineup after the global break.
As a outcome of his brilliant form, the 18-year-old received a call-up to Gareth Southgate's latest England squad and has been linked with Premier League giants such as Manchester United and Liverpool, while Arsenal, Tottenham Hotspur und Chelsea are also said to be monitoring the player's situation in Germany.
"You just want to go out there and do your best and I'm sure everyone will".
Sancho, who also spent several years in Watford's academy, is now living a childhood dream by linking up with England's senior team, saying it was "the biggest thing" that could happen to a teenager like him.
Sancho said: "Obviously moving from home, that was the biggest".
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"It would be a dream come true to play".
"Adjusting yourself to a new environment is one of the hardest things you can possibly do, but once you overcome that, you grow as a footballer and as a person".
Dortmund are apparently gearing themselves up for transfer offers in the summer and believe they should get around as much as they sold Ousmane Dembele to Barcelona for in the summer of 2017.
Sancho said: "I don't really see myself as a talented player".
"I'm a bit tricky, direct, confident obviously".
"That won't faze me at all", he said.
"Now, because of the loan system and how hard it is to break into a Premier League side, we're seeing more and more young players making a football decision to play overseas, and that's fantastic for our game because they're going to come back with different things they've been taught".
Mount admits that experience only made him more determined to return on a more full-time basis as he looks to become the first outfield Championship player to earn an England cap since Cardiff's Jay Bothroyd in 2010.