Striker Nicolas Jackson has agreed with Chelsea that he can leave the club.
The 24-year-old trained alone on Friday amid reported transfer interest from Newcastle after they missed out on signing Manchester United-bound Benjamin Sesko.
He was left out of the squad for Friday's friendly against Bayer Leverkusen.
A move suits Jackson and Chelsea, with the Blues having signed two strikers this summer - Joao Pedro from Brighton and Liam Delap from Ipswich Town.
Chelsea hope to receive at least double the £32m they spent to sign the Senegal forward in 2023 from Villarreal.