The 21-year-old French attacker, who holds the Bundesliga speed record at 23.09 mph, has drawn interest from Sunderland and previously snubbed Hull City.
Leeds need Jean-Matteo Bahoya as cover before approving Willy Gnonto's loan, with Frankfurt open to a sale despite late-window hurdles. Fans hope the deal strengthens their attack while enabling the swap, as the Italian deadline hits 7pm UK time.
Hull City had agreed a deal with the Bundesliga side and he had been granted permission to have a medical in East Yorkshire.
France Under-21 international Bahoya, previously linked with several Premier League clubs, has produced seven goals and eight assists in 78 matches for Frankfurt since joining from French club Angers in 2024.
Primarily a left winger, he is capable of playing in multiple attacking positions.
