Derby have signed goalkeeper Kelle Roos from Skrill Premier side Nuneaton for an undisclosed fee.
Dutchman Roos, 21, who began his career with PSV Eindhoven, has put pen to paper on a two-and-a-half-year contract with the Rams.
"We are delighted to welcome Kelle to the goalkeeping department," said Derby coach Eric Steele.
"He is a young up-and-coming talent with potential and a good addition to the first-team squad."
Roos joined Nuneaton this season and has kept eight clean sheets in 13 appearances for the club.
He has also played for Willem II, Tilburg and NEC Nijmegen in Holland and had a trial at Liverpool this month as well as being invited to train with the Rams' Sky Bet Championship rivals Ipswich and Bolton.