Chelsea are watching Manchester United's talks for Barcelona midfielder Frenkie de Jong.
The Guardian says Chelsea are keenly monitoring any developments surrounding the 25-year-old.
It comes after Manchester United agreed a fee with Barca worth around £56million with add-ons included.
If the Blues are keen to match that bid, then they may be in for a transfer battle with their Premier League rivals.
The Netherlands international may be able to add much-needed depth and long-term security to the middle third for Thomas Tuchel.
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