Manchester United are closing in on a deal for Borussia Dortmund winger Jadon Sancho, although the two clubs differ in their assessment of the England winger, sources have told ESPN.
United have reported they are willing to pay £72m for Sancho, although the Dortmund star is seeking closer to £77m.
Sources say Dortmund also want around £4m in add-ons, while United still have to agree a payment structure for the fee - another potential stumbling block.
Despite the issues being addressed, sources told ESPN that progress is being made and all parties are confident a settlement can be found.
Sancho, 21, who is part of England's squad at Euro 2020, is keen to move to Old Trafford, while United manager Ole Gunnar Solskjaer has made former Manchester City his top transfer target this summer.
Negotiations with Sancho's representatives are going smoothly, with the bulk of the deal going on last summer when United also tried to sign him from Dortmund.
Sources say United believe they have time to make a deal with Dortmund.
The German club are due to leave for a preseason training camp in Switzerland on 23 July, before their home season begins on 14 August.
The transfer deadline for Premier League teams is August 31.