The Brazilian made his way to Camp Nou during the summer of 2020 but was restricted to just one appearance in his debut campaign
Matheus Fernandes has accused Ronald Koeman of having a "personal problem" with him, with the Dutch coach telling the Brazilian that he does not "have the quality to play for Barcelona".
The highly-rated 22-year-old midfielder was snapped up by the Blaugrana in January 2020 and allowed to take in a loan spell at Real Valladolid before making his way to Camp Nou.
Koeman had inherited the reins before a debut campaign in Catalunya was opened, and Fernandes found himself restricted to just 17 minutes of game time off the bench in a Champions League group-stage clash with Dynamo Kiev.