Barcelona forward Lionel Messi is looking to end the year with a fifth trophy when they play in the Fifa Club World Cup in Japan.
Barca, who face Guangzhou Evergrande in Thursday's semi-final, have won La Liga, the Copa del Rey, the Champions League and Uefa Super Cup in 2015.
In 2009 they won all six trophies, including the Spanish Super Cup.
"That time we won, everything looked unrepeatable. We weren't sure if we'd get close to it again," Messi said.
"And here we are. Now what's left for us to do is end the year in the best possible way and make it unforgettable."
