Derby have agreed terms with PSV Eindhoven midfielder Mika Vayrynen.
Vayrynen has been at PSV since 2005
The 25-year-old Finnish midfielder has undergone a medical and is expected to complete his transfer later on Friday.
Vayrynen, who has been with PSV since the summer of 2005, is a left-sided player who can also play in the centre of midfield.
Prior to joining PSV he played for Finnish sides FC Lahti and FC Jokerit, before moving to Holland where he played for four years with Heerenveen.
Derby chairman Peter Gadsby said: "We're delighted and he follows Benny Feilhaber in adding to our squad."
Feilhaber is an American midfielder, who is close to joining Derby from Hamburg.