The two handball giants were drawn to face each other in the "Final four" in Cologne, 14-15 June.
Barcelona, which has won three of the last four years, had to struggle hard to reach the semifinal this year. Against Pick Szeged, coached by Sweden's national team coach Michael Apelgren, it was a narrow defeat at home on Thursday. They managed to get away with it, thanks to their three-goal win in the first match in Hungary.
Jonathan Carlsbogård and Hampus Wanne were part of the championship team last year and are now facing a bunch of national teammates in the semifinal.
Felix Claar had a key role when Magdeburg turned around the away return against Veszprém and advanced to the semifinal. Mittnian scored four out of five goals - the fifth was scored by Albin Lagergren - when Magdeburg turned a four-goal deficit into a lead in the final minutes.
In Magdeburg, which won the CL two years ago, there are also Daniel Pettersson, Oscar Bergendahl (injured) and Isak Persson (outside the squad last time).
In the other semifinal, Max Darj's Füchse Berlin meets French Nantes, the only Final four team without Swedes.