New €60million signing Pjanic tested positive for COVID-19 in August and had to go into quarantine, meaning he only arrived in Barcelona on Thursday.
No one can ever take your memories from you. But this is a new beginning, a new incredible story 🙌— Miralem Pjanic (@Miralem_Pjanic) September 12, 2020
Nadie podrá quitarte jamás los recuerdos pero esto es el nuevo inicio de una nueva e increíble historia 💪#mesqueunclub💙❤️ #ForçaBarça #Pjanist🎹 pic.twitter.com/dYebeY8mdL
He worked out at the club's training ground for the first time on Saturday, ahead of Barca's friendly against Gimnastic.
Barcelona posted photos of Pjanic and Jean-Clair Todibo, who has also been kept away from the team after a positive coronavirus test, being put through their paces.
Alongside the images, the club wrote: "[Pjanic] and [Todibo] have received the medical green light after recovering from COVID-19, and have already trained at the Ciutat Esportiva."
Pjanic was not included in a 25-man squad named by Ronald Koeman to face Nastic, but Lionel Messi was selected.
Messi only started training with his team-mates this week after failing to push through a departure from Camp Nou.
Ousmane Dembele could make his return from injury in the friendly, while maiden first-team appearances could be on the cards for new arrivals Francisco Trincao and Pedri.
Ansu Fati will not take part in the match after sustaining a right hip bruise in training on Friday, while Luis Suarez and Arturo Vidal - who are reportedly nearing respective moves to Juventus and Inter - were left out.