Watford have re-signed midfielder Adlene Guedioura from Crystal Palace on a permanent basis.
The 29-year-old had two loan spells with the Hornets last season, scoring three times in 17 appearances to help them win promotion to the Premier League.
The Algerian international has now penned a three-year deal at Vicarage Road.
"Midfielder Adlene Guedioura has joined Watford for an undisclosed fee just before the closure of the summer transfer window," Palace wrote on their official website.
"The club would like to wish good luck to Adlene at Vicarage Road."
Guedioura made 19 appearances for Palace after joining from Nottingham Forest in 2013.