Ernesto Valverde is yet to decide whether Andres Iniesta can be risked in Wednesday's Champions League tie against Chelsea, with the Barcelona captain struggling to recover from a hamstring injury.
Iniesta was forced off during Barca's 1-0 LaLiga defeat of title rivals Atletico Madrid on March 4 and has not played since, missing the weekend win over Malaga.
The midfielder has returned to training but Valverde will assess his performance in Tuesday's session before making a final decision on his availability.
"He's done well in training but we can't say whether or not he will play yet," Valverde told reporters.
"It's a huge game but you need to be 100 per cent fit to play. It depends whether he trains today.
"Tomorrow is a must-win situation so you need to take risks, as long as they are not too excessive.
"But you also do not want to compromise the safety of the player."
Sergio Busquets: "Andrés Iniesta helps us a lot on and off the field. He always brings something different to the team. We will see if he can help us tomorrow, after training we will know" #BarçaChelsea pic.twitter.com/GvqusRUzrD— FC Barcelona (@FCBarcelona) March 13, 2018
With Iniesta absent and Lionel Messi unavailable due to the birth of his third son, Ousmane Dembele excelled in Barca's defeat of Malaga on Saturday and the France international is a contender to start against Chelsea.
"It was against 10 men but he did perform very well and he offers something very different to the team," said Valverde, who confirmed Sergi Roberto should be fit to play despite missing training.
Chelsea's defensive tactics restricted Barca to minimal chances in the first leg, but a mistake from Andreas Christensen led to Iniesta setting up Messi for a crucial away goal in a 1-1 draw.
And Valverde expects Antonio Conte's men to line up in a similar shape when they visit Camp Nou, where they are unbeaten in their last four visits.
"In the first leg we saw Chelsea's virtues," Valverde said. "We don't know if they will attack or defend, it depends what the score is.
"The initial result is good for us but we have to play our game and be ourselves. Chelsea are a team that can score at any time.
"They can take different approaches, they showed that in London. But when they push back and defend strong they are hard to break through. Maybe the secret is to keep pressing, but they are also very strong on the counter-attack.
"Tomorrow we have to be wary of the threats of Chelsea, they are a threat from set-pieces and on the counter-attack and we have to be careful about that."
|Eight for 10! - Nadeem spins his way to world-record figures|
|A 4-1 lead cut to 3-2 by VAR, but Quakes have no complaints after Atlanta defeat|
|UEFA opens disciplinary proceedings against Ronaldo|
|Joshua v Povetkin: Recapping AJ´s previous world title defences|
|Players told to ink twice over showing tattoos at Rugby World Cup in Japan|
|Mariano targeting Spain call-up after goalscoring Madrid return|
|Pandya, Axar and Thakur out of Asia Cup|
|England omit Cipriani, Tuilagi and Ashton called up|
|Can reacts to Ronaldo´s red card: We are not women|
|One Year to Go: Five Rugby World Cup debutants set to shine|
|Shy Osaka not comfortable with new-found fame|
|Belgium and World Cup winners France make FIFA rankings history|
|Ronaldo wanted to impress - Bernardeschi sympathises after Juve superstar´s red|
|Van Dijk warns Liverpool: Believe we can win trophies or stay home|
|Menezes complains of anti-Brazilian conspiracy after Dede´s VAR red|
|Diamondbacks rout Cubs to remain in postseason picture|
|Modric embraces Ballon d´Or chants as Di Francesco backs Madrid star for award|
|MLS Review: Martinez helps Atlanta stage comeback amid VAR controversy|
|Kerevi recommits to Wallabies, Reds|
|Lyon to ban fan for life after footage of Nazi salute emerges|
|Milan must respect opponents – Gattuso not underestimating Dudelange|
|Copa Libertadores Review: Zarate leads Boca, River draw|
|Mourinho: Dalot can play at Man United for more than 10 years|
|Johnson hoping to erase East Lake demons|
|´No question´ Fitzgerald faces Bears, says Cardinals´ Wilks|
|Rodgers says roughing the passer penalties are ´going the wrong direction´|
|Ravens fined $200,000 for violating communication policy|
|LeBron James set to star in ´Space Jam´ sequel|
|Ronaldo red card ´absurd´, says Pjanic|
|Kovac hails ´special´ Sanches after Bayern goal|
|Marcelino: Tearful Ronaldo said he did nothing wrong|
|Fernandinho takes blame for Man City´s Lyon loss|
|Lovren denies any wrongdoing after perjury charge|
|Plzen boss Vrba slams late mistakes|
|I almost scored as many as Messi - Tagliafico the unlikely hero for Ajax|
|Ronaldo deserves Ballon d´Or not Modric, says Casemiro|
|United fan Rafael - I´ve never lost at City|
|Davis explains abrupt mid-game NFL retirement: ´Football is not for me´|
|Lopes pays tribute to under-fire Lyon coach Genesio|
|Toulon´s Bastareaud handed five-week ban|
|Steelers WR Brown disciplined for missing meeting|
|Arteta refuses to make excuses for Manchester City´s Lyon loss|
|Allegri calls for VAR after Ronaldo´s contentious red card|
|Championship Review: Boro go second, Birmingham still winless|
|Lopetegui: Mariano took his chance|
|Juventus proved their quality after Ronaldo red card - Bonucci|
|Pogba ´class´ impresses Mourinho|
|Man City not Champions League favourites, insists Bernardo Silva|
|Isco calls for Modric to win Ballon d´Or after Champions League win|
|Wawrinka into last eight in St Petersburg|
|Goal hero Pogba is one of the best in the world - Shaw|
|Sane SOS can´t salvage sorry City display|
|Hoffenheim will learn lessons from Shakhtar draw, insists Nagelsmann|
|Valencia 0 Juventus 2: Pjanic hits the spot after Ronaldo sees red|
|Viktoria Plzen 2 CSKA Moscow 2: Krmencik heroics undone by late show|
|Benfica 0 Bayern Munich 2: Sanches returns to haunt his former club|
|Young Boys 0 Manchester United 3: Pogba double inspires Red Devils|
|Manchester City 1 Lyon 2: Cornet and Fekir stun Champions League favourites at home|
|Real Madrid 3 Roma 0: Isco stunner sets up winning start for Champions League holders|
|Ronaldo sent off on Champions League debut for Juve and may miss United reunion|
|Shakhtar Donetsk 2 Hoffenheim 2: Maycon denies Nagelsmann´s side|
|Ajax 3 AEK Athens 0: Tagliafico at the double in opening win|
|Dalot makes debut, Martial starts for Manchester United|
|India avenge ICC Champions Trophy loss with big win over Pakistan|
|Ronaldo makes Champions League debut for Juve|
|Lopetegui picks Navas over Courtois for Champions League clash with Roma|
|Willian very happy under Sarri after Conte row|
|Sarri deals blow to Chelsea kids´ Europa League hopes|
|Mendy out for Manchester City as Aguero makes bench|
|Cech accepts performances key to securing Arsenal stay|