Borussia Dortmund director of football Michael Zorc has admitted that the German giants "are concerned" when it comes to the future of Jadon Sancho.
The 20-year-old has been in excellent form for BVB during the 2019-20 campaign, scoring 20 times and contributing 20 assists in 42 appearances in all competitions.
Manchester United continue to be linked with the England international, whose current contract at Signal Iduna Park is due to expire in June 2022, ahead of this summer's transfer window.
Zorc has conceded that his team "are concerned" over Sancho's future amid suggestions that the former Manchester City youngster is keen on a return to the Premier League.
"It is clear that we are concerned. But I don't want to talk about that now," Ruhr Nachrichten quotes Zorc as saying.
Dortmund are believed to value the attacker in the region of £115m, and it remains to be seen whether Ole Gunnar Solskjaer's side would be prepared to meet the asking price due to the financial impact of the coronavirus outbreak.