Kai Havertz has been linked with a move to the Premier League this summer.
And Chelsea could be his destination.
The 20-year-old attacking-midfielder has been in superb form for Bayer Leverkusen this season, taking his tally to 12 goals in 35 appearances in all competitions with a first-half brace against Werder Bremen on Monday night.
Those numbers would make the Germany a welcome addition to Frank Lampard's squad even with the arrival of Hakim Ziyech from Ajax.
However, ex-Blues midfielder Michael Ballack has urged his countryman to hold off on a move to England for the time being.
"Players with his quality are in demand everywhere. But I think he’s in good hands in Leverkusen," Ballack told SportBild.
"The conditions there are perfect for young top players and their development. ‘Bayer play attractive football and their training facilities are very good.
"Leverkusen also offer a cautious environment, and as a player you can make mistakes without being the focus of criticism. You should appreciate that.
"Of course a player like Kai Havertz has to play in the Champions League, so it would be important for Leverkusen to qualify for it."
But after watching Havertz score twice in the first-half on Monday night, some Chelsea fans are in disagreement with Ballack as to what's best for the midfielder's immediate future.
In fact, some have taken to social media and urged those responsible for transfers - owner Roman Abramovich and director Marina Granovskaia to get a deal done for Havertz this summer.
Take a look at the best responses on Twitter...
Havertz has offered any interested party a massive boost when he hinted at a move this summer.
"They haven’t scared me off," Havertz told Sky Germany last year on why he stayed put in the summer. "I don't know exactly what it was like with Timo [Werner], but it just didn't happen for me this year.
"I think there were a number of reasons why. But I'm happy to be here and stay in Leverkusen for another year.
"We'll see what will happens next summer."
