Chelsea are keeping tabs on Bayern Munich winger Leroy Sane.
The former Manchester City ace is drawing internal criticism from Bayern directors as he struggles to live up to his past reputation.
Chelsea are watching developments closely, says the Sunday Express, and a swap deal could be proposed.
Blues boss Thomas Tuchel is a fan of the Germany international and could use fringe players to tempt Bayern to part with the midfielder.
Arsenal and Tottenham have also been linked while Julian Nagelsmann is puzzled over how to get the best out of the 25-year-old.
The Blues have the upper-hand, though, and are able to offer Champions League football while being genuine Premier League title contenders.
Callum Hudson-Odoi, Christian Pulisic and Hakim Ziyech have been mentioned as candidates in swap negotiations.