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."
|Calhanoglu deal ´financially impossible´ for Leipzig|
|Not seen at Aus Open since Nadal, Djokovic and Murray in 2009 – ´Next Gen´ make move|
|Martial: Solskjaer lets me express myself|
|Djokovic sees off Tsonga to reach third round|
|Returning Cousins calls Warriors ´the most hated team in sports´|
|Halep injury ´nothing dangerous´|
|Warner picks up elbow injury in Bangladesh|
|Mkhitaryan returning to Arsenal training next week|
|Leeds United pounce for Real Madrid goalkeeper Casilla|
|Watson lights up Gabba before power cut forces abandonment|
|Superb Serena blows Bouchard away|
|Tevez, Hulk, Oscar, Lavezzi - how the CSL stars Dembele is following to China fared|
|Thiem retires from Australian Open|
|Osaka ´not telling´ when it comes to injury niggle|
|Fabinho enjoying Klopp´s management style|
|Halep battles past Kenin in Melbourne|
|Hartley to miss England´s Six Nations opener|
|Dembele departs Spurs for Guangzhou R&F|
|Nacho convinced Isco remains important to Real Madrid|
|Warriors star Curry sets NBA record|
|Raonic survives four-hour marathon against Wawrinka|
|Osaka powers through to Aus Open third round|
|Irving dominates in Celtics´ win over Raptors|
|Irving called LeBron this week to apologise|
|Ajax star De Jong wants to resolve future ´quickly´|
|Payton on Rams CB Peters: I have great respect for him|
|Rockets star Harden matches Chamberlain with historic performances|
|Nishikori survives Karlovic test in Melbourne|
|Vieira reunion felt really weird - Henry|
|´#BetAgainstUs´ - Edelman and Pats embracing underdog status|
|Van der Vaart: Isco the best player in the world|
|I haven´t seen Guardiola or Klopp do that – Lampard unhappy with Bielsa|
|Real Madrid always play to win, insists Casemiro|
|Royals pitcher Skoglund suspended for 80 games after testing positive for PEDs|
|Ronaldo and Juve celebrate Supercoppa Italiana title with Mayweather|
|We are not going to talk about Morata - Simeone reluctant to discuss striker|
|Madrid weak in Leganes loss, says Solari|
|Bologna and Banvit seal Champions League play-off spots|
|LeBron James to miss Thunder & Rockets games but nearing practice return|
|Leganes 1 Real Madrid 0 (1-3 agg): Isco starts as Solari´s side go through despite defeat|
|NFL playoffs 2019: X-factor for each NFC team|
|Mahomes: Chiefs must not repeat mistakes against Patriots|
|Higuain´s Supercoppa benching due to virus, says Milan boss Gattuso|
|Brown fires back at Arians over ´diva´ comments|
|Stone heading home from West Indies tour with back injury|
|Shazier will continue rehab with intention of playing again|
|That´s why we signed him! Allegri hails Supercoppa match-winner Ronaldo|
|Monaco on worst home run in club´s history after Nice draw|
|Atletico Madrid 3 Girona 3 (4-4 agg): Simeone´s side out on away goals|
|Gregg Williams is Jets´ new defensive coordinator|
|Ronaldo: Supercoppa triumph just the start for Juve|
|Monaco confirm Batshuayi talks|
|You know more than me! Bielsa´s Barcelona research surprised Guardiola|
|Juventus 1 AC Milan 0: Ronaldo heads Bianconeri to Supercoppa glory|
|Kane injury cannot be excuse for Tottenham – Pochettino|
|Woods to open 2019 schedule at Torrey Pines|
|Reported Liverpool target Dabbur to undergo Sevilla medical|
|Lebanon v North Korea: Radulovic calls on players to make history|
|MLS MVP Martinez signs five-year contract with Atlanta|
|WBC set deadline for Wilder-Fury rematch|
|Iran 0 Iraq 0: Team Melli top Group D after dull draw|
|Vietnam 2 Yemen 0: Quang Hai shines to give Golden Dragons hope|
|Bielsa admits to spying on all Leeds´ opponents|
|Valverde open to arrivals amid De Jong tug-of-war|
|Sexton named in Ireland squad for Six Nations openers|
|Higuain benched for Supercoppa Italiana amid Chelsea links|
|De Grandhomme, Latham and Santner back in Black Caps squad|
|Oman v Turkmenistan: Verbeek tells players to ´score as many as possible´|
|Japan v Uzbekistan: Cuper not distracted by potential last-16 opponents|
|Brown desperate for England recall|