Sunderland have taken their summer signings tally to 10 by capturing Ondrej Celustka on a season-long loan.
The 24-year-old Czech has joined the Black Cats from Turkish side Trabzonspor.
Celustka started his career with FC Tescoma Zlin before moving to Slavia Prague, for whom he made 41 appearances.
A short spell with Palermo followed before he headed to Turkey, while he represented his country at the 2011 Under-21 European Championships.
Source: PA
