[2] Hasi moved to RSC Anderlecht in May 2000 and, despite only playing 16 matches in his first season due to injury problems, helped the club retain their league title.

Groin and knee problems restricted Hasi to eleven league appearances and four UEFA Cup games in 2002–03, however, but he returned to fitness to help Anderlecht win back the Belgian crown the following season.

[5] Six months after retiring from international football with Albania, on 15 June 2007, Hasi made his debut with Kosovo in a friendly match against Saudi Arabia after being named in the starting line-up and acting as captain of the team.

Hasi was promoted to head coach on 10 March 2014 following the sacking of John van den Brom in the aftermath of Anderlecht winning only three out of their eight post-Christmas league games, and being threatened with falling out of the title race.

[13] Due to poor results, notably the disastrous 6–0 home defeat to Borussia Dortmund in the 2016–17 UEFA Champions League, Hasi was relieved of his duties on 18 September 2016.

[17] The board chose him over other candidates based on his experience in UEFA Champions League qualifying matches, with the objective of leading the Reds to the competition's group stage after a year's absence.