Bellerín, Marcos Alonso, Sergi Roberto and Iñaki Peña were all out on pitch 2 on a cold Monday morning at the Ciutat Esportiva Joan Gamper after enjoying a fortnight off while the world's eyes were set on events in Qatar. Ronald Araujo, whose Uruguay are already out of the contest, and Franck Kessie, whose Ivory Coast did not qualify, were out on the pitch battling to get back to full fitness.
Barça won't have a game until December 31, when they host local rivals Espanyol at 2pm CET at Spotify Camp Nou.
Xavi Hernández will be recovering the services of his internationals over the next few days, depending on how far their teams get at the World Cup.
Sergi Roberto fully fit
The best news of the day was that regarding Sergi Roberto. He hurt his shoulder against Athletic on October 23, a game in which he scored one of the two goals in a 2-0 win.