United have been tracking the former Manchester City youngster for years and are ready to bring him back to England this summer, with Ole Gunnar Solskjaer making him his absolute transfer priority.
Dortmund are holding out for a deal worth £108million , which the club say Sancho has accepted, and Standard Sport understands United are ready to exhaust all avenues of negotiation to bring him to Old Trafford.
Former United player Keith Gillespie has told Sancho that the move will take the England international a step up in his career as the 20-year-old looks to become a “world superstar.”
“He’s a fantastic player and still very young,” Gillespie told Sky Sports.
“He’s done fantastically well in Germany, but he wants to come to the Premier League.
“Manchester United are one of the biggest clubs in the world. No disrespect to Dortmund, they are a massive club as well but are not Manchester United.
“You come to a club like Manchester United to fulfil all your dreams, he’ll want to be a world superstar.”