• The first leg at Arsenal was Barcelona's 50th draw in the European Champion Clubs' Cup.
• Lionel Messi needs four goals to equal Rivaldo as Barça's all-time top scorer in the UEFA Champions League.
• Barcelona have conceded 146 goals in the UEFA Champions League, group stage to final.
UEFA Champions League statistics
• The holders have had 70 shots on goal, the joint highest total in the competition along with Arsenal.
• Barça have committed 110 fouls, fewer than any other team in the quarter-finals.
• Zlatan Ibrahimović fired 20 shots on goal in the first nine matches, more than any other player; Messi is second with 19 attempts on target.
• Carles Puyol is suspended for the second leg following his red card in north London and Gerard Piqué also serves a one-match ban having been cautioned in the first leg.
Latest domestic information
• Saturday 4 April: FC Barcelona 4-1 Athletic Club (Jeffrén 27, Bojan 40 59, Messi 67; Susaeta 77)
Valdés; Puyol, Piqué, Chygrynskiy, Abidal; Jeffrén (Pedro 60), Busquets (Xavi 54), Touré (Dos Santos 76), Maxwell; Messi, Bojan.
• Josep Guardiola planned four changes to the side held at Arsenal, but was forced to make five when Ibrahimović pulled up with a calf problem during the warm-up, giving Bojan Krkić his chance.
• Ineligible for the UEFA Champions League, Dmytro Chygrynskiy came in at centre-back with Puyol shifting to the right as cover for the suspended Daniel Alves; fit-again Eric Abidal returned on the left. Maxwell was pushed into midfield as Jeffrén and Yaya Touré started, with Pedro Rodríguez, Seydou Keita and Xavi Hernández dropping to the bench.
• Jeffrén's opener was his first senior goal for Barcelona.
• Messi has scored 24 in his last 23 games for the Spanish titleholders.
• Barça have won 13 games this season by three goals or more.
• Barcelona have scored five Liga goals direct from free-kicks this season, all from different players: Alves, Ibrahimović, Rafael Márquez, Thierry Henry and Messi.
• Ibrahimović has scored in each of his last four appearances.
• Messi became only the second player to record back-to-back Liga hat-tricks with his efforts against Real Zaragoza and Valencia CF last month. Salva Ballesta did so for Real Racing Club in October 1999.
• Messi, who became the youngest player to reach 100 goals for the club in January, made his 200th Barcelona appearance against CA Osasuna on 24 March. He reached the milestone with 114 goals, including 72 in his last 90 games.
• Pedro has surpassed Giovanni Silva's 1997/98 club record by scoring in six competitions in one season: the Liga, UEFA Champions League, UEFA Super Cup, Copa del Rey, Spanish Super Cup and FIFA Club World Cup.
• The Blaugrana's six-match winning start to the Liga campaign equalled a club record also achieved in 1929/30, 1990/91 and 1997/98.
• Ibrahimović started the season by becoming the first new signing to score in Barcelona's opening five league games. Hristo Stoichkov held the previous record for a newcomer, having struck in Barça's first three outings in 1990/91.
• Gerard Piqué – out 21-31 March (bruised left knee)
• Eric Abidal – out 9 February to 3 April (groin strain)
• Andrés Iniesta – out since 27 March (thigh)
• Zlatan Ibrahimović – out since 3 April (right calf)
• Jeffrén limped off after falling awkwardly just before the hour on Saturday.
• Messi missed training on Thursday after complaining of a migraine. He returned the following day.
• On 26 March Johan Cruyff was named Barcelona's honourary president following a unanimous decision by the club's board. Director general Joan Oliver said it was "in recognition of Johan Cruyff as a player, a coach and someone who helped inspire the successes at the club in 2009."
• Last week's first leg was Arsenal's 50th draw in UEFA competition.
UEFA Champions League statistics
• The Gunners have scored 20 goals, making them the competition's highest scorers.
• Arsenal have had 40 shots wide, less than the other quarter-finalists but managed 70 shots on goal, the joint highest total in the competition along with Barcelona.
• Andrey Arshavin has set up five goals, the joint highest total in the competition.
• Alex Song has committed 25 fouls while Cesc Fàbregas has been impeded 26 times, both more than any other player still involved.
• Fàbregas is suspended following his first-leg yellow card. Gaël Clichy, Abou Diaby and Robin van Persie are all within a booking of a one-match ban.
Latest domestic information
• Saturday 4 April: Arsenal FC 1-0 Wolverhampton Wanderers FC (Bendtner 90+4)
Almunia; Sagna, Campbell, Vermaelen, Silvestre; Denilson, Song (Nasri 71); Eboué (Bendtner 64), Rosický, Walcott; Eduardo (Vela 79).
• Arsène Wenger made seven changes to the side that drew against Barcelona, with Fàbregas, Arshavin and William Gallas all ruled out through injury and Clichy not risked despite recovering from a back problem. Clichy, Diaby, Samir Nasri and Nicklas Bendtner dropped to the bench as Sol Campbell, Mikaël Silvestre, Denilson, Emmanuel Eboué, Tomáš Rosický, Theo Walcott and Eduardo came in.
• Bendtner scored his eighth goal in ten appearances, the last three coming in second-half added time, against a Wolves side reduced to ten men for the last 24 minutes after Karl Henry's dismissal.
• The Gunners have scored goals in the last ten minutes in each of their last nine games.
• Just three of Arsenal's 75 league goals have come in the first 15 minutes, compared to 22 in the final quarter-hour.
• Manuel Almunia marked his 100th Premier League appearance for Arsenal with his 13th clean sheet of the season in all competitions.
• The Gunners are nine matches unbeaten, winning seven and drawing two since they lost 2-1 at FC Porto on 17 February.
• Arsenal have converted five penalties in their last nine matches – four by Fàbregas, one by Bendtner – all of them coming in the last seven minutes of games.
• With 15 Premier League goals this season, Fàbregas has surpassed the club record tally for a midfielder in one campaign. Robert Pirès managed 14 goals three seasons running between 2002/03 and 2004/05.
• Tomáš Rosický – out 9-27 March (groin)
• Johan Djourou – out since 11 August (knee)
• Robin van Persie – out since 14 November (right ankle ligaments)
• Kieran Gibbs – out 17-24 November (bruised foot) and since 24 November (broken metatarsal)
• Aaron Ramsey – out since 27 February (broken leg)
• Cesc Fàbregas – out since 31 March (broken leg)
• Andrey Arshavin – out since 31 March (calf strain)
• William Gallas – out 10 February to 31 March and since 31 March (calf strain)
• Fàbregas will miss the rest of the season after cracking his right fibula in the first leg. Ramsey and Gibbs are also ruled out for Arsenal until next term.
• Gallas and Arshavin are both expected to be sidelined until the end of April.
• Denilson (groin) and Clichy (back) picked up knocks against Barcelona last week but were on the bench for the Wolves game.
• Van Persie damaged his ankle in the Netherlands' friendly against Italy in November.
• On 1 October Wenger became Arsenal's longest serving manager, celebrating 13 years at the club and eclipsing the previous record tenure of 4,748 days set by George Allison between 1934 and 1947.
• On 16 January Campbell became the first player to rejoin Arsenal during Wenger's tenure and only the fifth to do so in the club's history.
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