If in the end Sancho wants to stay at Signal Iduna Park then Dormtund must be prepared with an offer for Sancho because I think as long as the price is right then this will not be too difficult.
Manchester United are asking for €40m for Jadon Sancho and this price is quite unattractive for many clubs including Borussia Dortmund and Juventus which seems also interested in bringing him to Italy.
Manchester United don't want him to let him go on loan again but they would rather sell him or as they said sacrifice him with lower amount of money once for all. I don't know if the asked price will make Dortmund make a move or not.