Ronald Koeman confirmed Sergiño Dest is a doubt for Sunday's match against Osasuna despite including him in his 21-man squad for the La Liga game at Camp Nou.
"It isn't serious because Dest trained [on Saturday] but he came back really tired back after the match against Kiev and he had some [muscle] problems," Koeman revealed.
"We will not take any big risks with him because in his position we have a lot of players injured. If he's OK, he will start; if we have doubts, he will not start."
Barça are short in defence with right-back Sergi Roberto and centre-backs Gerard Pique, Samuel Umtiti and Ronald Araujo all currently injured.
Therefore, there's no natural replacement if Dest isn't fit. Koeman says he's already spoken with the player who would have to fill in at right-back, with youngster Oscar Mingueza and left-back Junior Firpo options.