Former Germany international Dietmar Hamann believes Dortmund wouldn't hesitate to welcome Sancho back, particularly given their current struggles in the Bundesliga.
"Borussia Dortmund might just be looking at Jadon Sancho because although it started well at Chelsea, it looks like it hasn’t worked out," he said in an interview with PokerScout.
"It looks like Chelsea might pay millions to send him back to Manchester United, so it looks like he might be an option for Dortmund this summer. They tried to keep him last summer but it wasn’t possible, I think he wants to go back. Dortmund wouldn’t be struggling like they are if he had stayed, he has been absolutely brilliant for them. He took Dortmund to the Champions League final last season and I think they would have him in a heartbeat."