Chelsea are discussing a new contract for defender Trevoh Chalobah after he impressed boss Thomas Tuchel.
The 22-year-old had been touted for a loan move this season but is now set to stay at Stamford Bridge.
Chalobah followed a strong pre-season by scoring a spectacular goal in the 3-0 win over Crystal Palace last Saturday.
Meanwhile, Blues defender Emerson Palmieri has joined Lyon on loan for the remainder of the season.
Lyon will pay a fee of around £420,000 for the 27-year-old Brazil-born Italy international, who can play at left-back or wing-back, who joined Chelsea from Roma in January 2018.