Villarreal forward Nicolas Jackson is undergoing a medical for Chelsea this weekend as he looks to complete his £30million move.
Chelsea are negotiating the structure of the fee, with Todd Boehly splashing the cash again as he looks to restructure the Blues squad.
The 21-year-old, who has played twice for Senegal, scored 13 goals last season in a breakthrough campaign at Spanish side Villarreal.
He bagged nine goals in his last eight games, as the Yellow Submarine finished fifth in the La Liga table.
The club are in need of forward players after struggling in front of goal last season, and will add Jackson to the addition of Christopher Nkunku, who joined this week.
Midfielder Kai Havertz is to undergo his medical too over the weekend prior to confirming his transfer to Arsenal. Goalkeeper Edouard Mendy will have a medical with Al Ahli on Monday.
Mendy, after losing his place in the Chelsea team, will follow N'Golo Kante in switching London for the middle east, with Kalidou Koulibaly and Hakim Ziyech likely to follow.
Chelsea are offloading several unwanted players after going through last season with a bloated squad, with new manager Mauricio Pochettino promised fewer players to manage.
Meanwhile, the Blues, who want £12million for Wales midfielder Nathan Ampadu, are ready to send David Fofana out on loan and are resuming talks with Brighton over a deal for Moises Caicedo.
The topic of central midfielders has been hot this summer with Caicedo and Declan Rice among the most talked about players likely to move.
While Rice is of stern interest from Arsenal, Manchester City are now also moving the sign the West Ham captain.
Arsenal are tracking Rice and Caicedo, but may have to settle for Romeo Lavia if the two players end up joining City and Chelsea respectively.