Derby County have signed Poland winger Kamil Jozwiak from Lech Poznan for an undisclosed fee.
The 22-year-old has signed a four-year contract with the Championship club and could make his debut in Saturday's league game away at Luton.
"He is an exciting player with a huge amount of potential," Derby manager Phillip Cocu told the club website.
"He has his best years ahead of him.
Kamil is someone we have closely watched over a long period of time.
" Jozwiak came through Polish top-flight side Lech Poznan's youth system and made his debut in 2016, when he was 17 years old.