As one of the most coveted players in Europe, Sancho has been a revelation since his move to Westphalia from Manchester in 2017.
Sancho has been widely linked with a big move away from Dortmund, with clubs like Chelsea, Manchester United and Liverpool all thought to be yearning for his signature.
The 20-year-old has been in fine form this season, scoring 17 goals and providing 19 assists in 31 games for the Black and Yellows before the season was suspended due to the outbreak of coronavirus.
Reus has warned Sancho against a move back to the Premier League and insists the Englishman should stay in Germany for at least a year or two.
“Jadon is an outstanding player and will definitely remain in demand by many clubs. That is a fact,” the former Borussia Monchengladbach man told German publication Sport Bild.
“I would advise him to stay at BVB for another year, maybe two. From my point of view, there is no better place for him at the moment.”
“He would have to find his place at a new club, which isn’t always easy for a 20-year-old.”
“Just how interesting do you think Jadon will be for the biggest clubs if he spends one, two or three years more here to develop further?”