The third-placed Bundesliga side has reportedly paid Ferencvaros four-million Euros for the 26-year-old, who has been named "Tunisian Footballer of the Year" by state news agency "TAP". "Aissa's qualities have been known to us for some time," said FCU manager Oliver Ruhnert. Laidouni, who has 28 caps for the Tunisian national team, was also a target for clubs such as Olympique Marseille and Celtic.
The Ecuador international has stated his desire to leave the club.
Warne's League One side welcome the Premier League outfit to Pride Park for a fourth-round game hoping to cause a surprise. Warne, who joined Derby from Rotherham in September, has history of upsetting the Hammers during his time as a player with the Millers in the second tier in 2003. West Ham, with the likes of David James, Michael Carrick and Jermain Defoe in their squad, felt the facilities were not up to scratch and instead changed at their hotel.