FC Barcelona:

In the 200506 season, Barcelona repeated their league and Supercup successes. The pinnacle of the league season arrived at the Santiago Bernabeu Stadium in a 30 win over Real Madrid. It was Frank Rijkaard's second victory at the Bernabeu, making him the first Barcelona manager to win there twice. Ronaldinho's performance was so impressive that after his second goal, which was Barcelona's third, some Real Madrid fans gave him a standing ovation. In the Champions League, Barcelona beat the English club Arsenal in the final. Trailing 10 to a 10-man Arsenal and with less than 15 minutes remaining, they came back to win 21, with substitute Henrik Larsson, in his final appearance for the club, setting up goals for Samuel Eto'o and fellow substitute Juliano Belletti, for the club's first European Cup victory in 14 years.

Please answer a question about this article. If the question is unanswerable, say "unanswerable". What team did Barcelona defeat to win the Champions League trophy?
Arsenal