Bayer Leverkusen chief Rudi Voeller has told Chelsea that they will not sell Kai Havertz unless their asking price is met.

The Germany international is at the centre of Chelsea's transfer interest this summer.

It comes after the signings of Timo Werner and Hakim Ziyech as Frank Lampard looks to build on a sturdy first year in charge.

After going the year without transfers, the Blues finished fourth in the Premier League and are keen on splashing the cash now they have the chance after a ban.

Havertz is the ideal signing for Lampard, but Leverkusen have slapped a €80m asking price on the playmaker.

Chelsea chief Marina Granovskaia has been worked hard to lower that total but Bayer have told her this is the lowest they will go.

The German has been getting closer to a Stamford Bridge move
The German has been getting closer to a Stamford Bridge move

Voeller said: “Havertz? We know that Chelsea are strongly interested in him.

"But we’ll not sell any player before the end of the Europa League.

"If Chelsea want to sign Kai, they must pay what we ask. No lower price because of Covid-19."

It backs up his earlier comments made last month that he has no intention of breaking up the Leverkusen squad before the season has ended.

"Maybe I'm too old-fashioned or romantic but for me it is a matter of course that a player ends the season no matter when it ends," he added.

The Blues are getting closer to securing Kai Havertz, with talks taking place
The Blues are getting closer to securing Kai Havertz

"There is no discussion at all for me to consider.

"Could I possibly hurt myself? Or take a little vacation?

"Then some should have withdrawn two months ago.

Get the latest transfer news straight into your inbox!

Want to be on the ball with Jadon Sancho to Manchester United updates? Or perhaps you're a Chelsea fan wondering who on earth could join next?

Well then sign up for the brilliant new Daily Star Sport email newsletter!

From the latest transfer news to the agenda-setting stories, get it all in your email inbox.

How do you sign up?

It only takes a matter of seconds.

Simply type your email address into the box at the top of this article and hit 'subscribe'.

And that's it, job done. You'll receive an email with all of the top news stories every single morning.

You can find out more information on our email newsletter on this link here.

"Whether it's the Europa League or the Champions League, if it's wanted by the player, the host and the club, I couldn't understand if a player didn't want to [play]."

Leverkusen overcame Rangers in the Europa League to set up a quarter-final tie with Inter Milan.

Both clubs have their sights set on winning the competition, but Bayer need to in order to land Champions League football next season having missed out in the Bundesliga.