Stuttgart midfielder Naouirou Ahamada is having a medical before an 11m euro (£9.6m) transfer to Crystal Palace.
The 20-year-old Frenchman is in London finalising a move and will bolster Patrick Vieira's options when the deal is confirmed.
The Eagles boss has previously spoken about the need to bring in January reinforcements.
Ahamada was in the Juventus academy before joining the Bundesliga side on a permanent deal in 2021.
He has made 18 appearances in all competitions for Stuttgart, scoring two goals, and has also represented France at under-18 level.