Ernesto Valverde has already confirmed France winger Dembele will not be risked on Saturday, but his involvement is an encouraging sign of his return from a hamstring injury.
Training footage released by Barca painted a different picture to the scenes at their bitter rivals, where Cristiano Ronaldo was unable to join his team-mates.
The star forward, who is reported to have picked up a calf problem in the Club World Cup final, was confined to light work away from the main squad for the second day in succession.
