RB Leipzig managing director Olivier Mintzlaff admits Timo Werner and Dayot Upamecano could leave this summer amid reports linking them with Manchester United.
United are keen to bolster their side at the end of the season with German forward Werner currently under consideration, while Upamecano also fulfils their transfer criteria.
The duo have both been linked with moves in the summer transfer window and now Mintzlaff admits Leipzig will likely have to sell a big name if they want to sign anyone this summer.
"In the Covid-19 crisis, we have other issues greater than concerns about contracts," managing director Oliver Mintzlaff told Sport1.
"We know the terms of our players' contracts and I know them very well - especially that of our top performers.
"For us, it is a no go that the top performers will be allowed to leave our club free of charge.
"That's the case with Timo Werner and that will be the case with Dayot Upamecano. I have the economic stability of the club in mind.
"We have to sell before we buy anything. But I see the need to sell only to a limited extent. We have a good squad."
