Bayer Leverkusen chief Simon Rolfes has explained why his side are taking a similar approach to Borussia Dortmund as Chelsea and Manchester United’s attempt to sign two of the Bundesliga’s rising stars.

Chelsea are attempting to convince Leverkusen to part with Kai Havertz but the two clubs are £20million apart in their valuations.

Frank Lampard’s side are not willing to pay more than £70m and are finding it difficult to reduce the fee.

Meanwhile, United have been quoted £100m by Dortmund to take former Manchester City youngster Jadon Sancho to Old Trafford.

The two Premier League sides will still have to shell out a substantial amount even though the market has been badly affected by the coronavirus, report the Express.

Leverkusen’s sporting director Rolfes has addressed why his side are taking a similar stance to Dortmund over their star player.

“You have to differentiate,” Rolfes said. “With many normal players, things will change and clubs will also act differently.

“But these are two exceptional players who are very rare and therefore have value. That is why we see the situation very relaxed there.”

It is widely reported that Chelsea are closing in on a deal for Havertz as the two clubs discuss the fee.

However, Rolfes denied that any approach has been made by the west Londoners.

“We have not yet had an offer,” he said. “We know that clubs are interested, but there is no official offer.”

Havertz returned to training last week and is preparing to compete in the Europa League next month.

Chelsea will have to wait until after the final on August 21 before they can make the Germany international their player.

“He is focused,” Rolfes said of the midfielder. “Kai is relaxed with the speculations, is focused, in a good mood.

“He makes a good impression. Like the other players, the holiday did him good.

“In a transfer window, which is particularly long this time, it is normal that not everything is always cleared up early.

“As a club and also as a sports director, clarifying the squad for the new season as early as possible is the desired scenario, however rarely the reality.

“We do our job anyway, always prepare and watch the market. We will see how personal data develop in the near future.”