Former Partizan player Slaviša Jokanović were appointed as Partizan's new head coach, with the club also adding a new sport director in Ivan Tomić. The club strengthened its squad with some foreigners like Juca, Almami Moreira and Lamine Diarra. The 2007–08 and 2008–09 season will remain as one of the most successful in club's domestic history. In 2008–09, the club successfully defended their league and cup double from the 2007–08 season, the first time this occurred its history. But in Europe, Partizan suffered a real shock: UEFA expelled Partizan from the 2007–08 UEFA Cup season and fined the club €30,056 due to crowd trouble at their away qualifying match against Zrinjski Mostar, which forced the match to be interrupted for ten minutes. UEFA judged travelling Partizan fans to have been the culprits of the trouble, but Partizan were allowed to play the return leg while the appeal was being processed. Partizan's appeal, however, was rejected and Zrinjski Mostar qualified for the next round, although Partizan beat them by an aggregate score of 11–1. Next season, the club enforced its squad with Brazilian striker Cléo; Partizan demolished Welsh champions Rhyl with a score of 8–0 (12–0 on aggregate) on 21 July 2009. This score is their largest ever winning margin in European competitions. After relegation from the Champions League, Partizan qualified two times in a row for the second tier of UEFA competition. The "Black & Whites" played in the 2008 UEFA Cup and 2009 Europa League group stage but as the same in 2007, the club did not advance any further.