Rennes attacker Raphinha is expected in England tomorrow to complete his move to Leeds United.
Marcelo Bielsa's side - who played out a thrilling 1-1 draw with Man City yesterday - were originally believed to have bid around £15.5m for the 23-year-old winger.
But that was bumped up to the £21m mark with the addition of add-ons.
Derby were also keen on Brazilian Raphinha but the lure of the Premier League far outweighed that of the Championship.
Raphinha scored five goals and registered three assists in 22 appearances in the French top flight last season.
And the former Sporting star has hit the ground running this season too with two assists for the table-toppers, who are unbeaten through five games with four wins.