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."
20. Juni 2018
|Astros´ win streak ends at 12|
|Lahm backs Germany, Low after losing start|
|Messi has all our support – Dybala|
|Strickland apologises for ´stupid decision´ that led to broken hand|
|Five-time Open Championship winner Thomson dies aged 88|
|´Positive´ Pogba not bitter towards media, says Varane|
|Portugal privileged to have ´humble´ Ronaldo, says Pepe|
|Strickland breaks hand punching door after blown save, out for up to eight weeks|
|He will have received good money – Costa delighted by Griezmann extension|
|Kane: Pochettino sent me love hearts after World Cup heroics|
|Nationals place Adams on 10-day DL with broken finger|
|Dybala: I can play alongside Messi|
|Lewandowski: Poland didn´t take enough risks|
|England´s Kane aiming to reach Ronaldo, Messi levels with World Cup performances|
19. Juni 2018
|Kicker given three-year match-fixing ban|
|England confirm Alli thigh injury|
|Federer through, Zverev out in Halle|
|Back on the map and earning letters from ladies, Tabarez embraces Uruguay´s heritage|
|Rampant England rout Australia in record-breaking display|
|Pulisic in right place at Dortmund, says Arena|
|Wilshere confirms Arsenal exit|
|NASCAR at Sonoma: TV schedule, standings, qualifying drivers for Toyota/Save Mart 350|
|Muguruza and Kvitova cruise through in Birmingham|
|Leno among top 10 most expensive goalkeepers|
|Pained Salah unable to halt Russia´s unlikely march|
|Kyrgios downs ´legend´ Murray as Dimitrov and Djokovic progress|
|Neymar pain normal – Coutinho unconcerned by ankle issue|
|Russia 3 Egypt 1: Salah strikes but hosts right on course for last 16|
|We must make Ronaldo less exceptional, says Morocco boss Renard|
|Chandimal handed one-Test ball tampering ban, faces further ICC charge|
|Arsenal sign goalkeeper Leno from Leverkusen|
|Mexico style in Germany win surprised Arena|
|Monaco complete €20m move for Lyon teenager Geubbels|
|Saudi team don´t know cause of aeroplane fire, Pizzi reveals|
|Champions League qualifying draw: Celtic travel to Armenia, Ajax face Sturm Graz|
|I´ve never seen a player win on his own – Santos shrugs off Ronaldo dependence|
|Murray impresses despite narrow defeat on return|
|West Ham land club-record Diop signing|
|El Hadji Diouf hails ´perfect start´ for Senegal|
|Cisse and Senegal give cause for African celebration|
|Carvajal ready to face Iran - Hierro|
|Japan´s World Cup victory over Colombia sparks celebrations on the streets of Tokyo|
|Poland 1 Senegal 2: Good fortune and bad errors hand Africans Group H win|
|England shatter ODI world record with total of 481 against Australia|
|Best yet to come from England hero Kane, says Rashford|
|Salah starts for Egypt against Russia|
|De Jong expects to stay at Ajax|
|Barcelona angered by Pique´s involvement in Griezmann saga|
|Federer begins Halle defence with comfortable Bedene win|
|Tabarez not worried by slow Suarez start|
|Brazil´s Neymar felt pain in his ankle, CBF confirms|
|Griezmann understands Atletico fans´ nerves over Barcelona speculation|
|Queiroz salutes Hierro for uniting Spain|
|Stump from Scotland´s defeat of England auctioned for charity|
|Red Bull will not have works team label, confirm Honda|
|Neymar hobbles out of Brazil World Cup training|
|Ronaldo´s revelry, Messi´s miss and Sanchez´s shocker - Russia 2018, World Cup of the penalty|
|Brazil ask FIFA to explain VAR decisions against Switzerland|
|Colombia 1 Japan 2: Sanchez red spoils Pekerman´s plans|
|Argentina v Croatia: Mercado wants an end to ´Messidependencia´|
|Hoffenheim director suggests €50m bid could land Kramaric|
|England will emerge as a ´champion team´, insists Jones|
|Ryder Cup teams shaping up great, says Strange|
|We cannot replace Iniesta – Abidal|
|Colombia´s Sanchez sees second-quickest World Cup red card|
|France v Peru: Varane and Les Bleus calm after unconvincing start|
|Semenya challenges IAAF hyperandrogenism rule with CAS|
|No Germany line-up changes needed, says Neuer|
|James absent from Colombia line-up|
|Alli to have scan on thigh knock after England win|