 Bundesliga with 12 goals to his name making him Energie's top scorer.On 11 July 2012, Rangelov joined Swiss Super League side FC Luzern on a two-year contract for an undisclosed fee, though media reports estimated it to be between €300,000 and £350,000.Four days later, he made his debut in a 1–1 home draw against FC Zürich, playing the full 90 minutes.