Pedri has been one of the stars of the season in La Liga after establishing himself as a key creator in Barca's midfield.
Champions League: Mohamed Salah, Sadio Mane score as Liverpool ease past RB Leipzig to enter quarter-final
After six successive defeats at Anfield and dropping to eighth place in the Premier League, Klopp's men looked relieved to be away from home, with the second leg also played in the Hungarian capital due to COVID-19 travel restrictions.
Premier League: Top clubs will struggle with injuries without changes to fixture list, says Liverpool's Jurgen Klopp
Klopp's men saw off Leicester City 3-0 in Sunday's late Premier League kick-off and will welcome Atlanta to Anfield in the Champions League on Wednesday before travelling to Brighton for Saturday's early kick-off.
Reports said Keita was one of five players to have contracted the virus, although that has not been confirmed by the Guinea federation or Liverpool. The federation said only that “several players” tested positive.
Shaqiri joins Liverpool teammates Thiago Alcantara and Sadio Mane in testing positive for the coronavirus this season.
Bayern said the 23-year-old Roca was getting a five-year contract and will wear the No 22 jersey.
Thiago, who joined from Bayern Munich this month, missed Monday's 3-1 win over Arsenal and will now self-isolate. He'll miss another clash with Arsenal in the League Cup on Thursday as well as Sunday's Premier League trip to Aston Villa.
Premier League: Liverpool sign Portuguese winger Diogo Jota from Wolves for reported $54 million fee
Jota will move to Anfield for a fee reportedly rising to £45 million ($58 million), with Liverpool's young defender Ki-Jana Hoever heading to Wolves.
The 29-year-old becomes Liverpool's first major signing for two years, in which time they have won the Champions League and a first English league title for 30 years.
Thiago agreed a "long-term contract" with the Premier League champions after deciding to end his seven-year stay with Bayern.
Premier League: Bayern Munich confirm Thiago Alcantara move to Liverpool after seven years in Bundesliga
Bayern head coach Hansi Flick congratulated Liverpool manager Jurgen Klopp on landing Alcantara, who he described as an "exceptional player".
UEFA Nations League: Focus on Germany vs Spain, France vs Croatia, Gareth Bale and Eduardo Camavinga
Second edition of UEFA Nations League gets underway in mid-week just a week after the 2019-20 season ended.
Bundesliga: Thiago Alcantara set to leave Bayern Munich but club 'cautiously optimistic' on keeping David Alaba
With a year left on their contracts, both defender Alaba and central midfielder Alcantara are stalling over extensions.
Champions League: Bayern Munich hope European success can convince Thiago Alcantara, David Alaba to stay
Mueller, a 2014 World Cup winner, says it would be "extremely bitter" if both Alcantara and Alaba left at the end of Bayern's Champions League campaign.
Thiago's deal with Bayern ends next season and Rummenigge said they had no choice but to sell the player as they did not want to let him go without receiving a transfer fee.
Bundesliga: Bayern Munich take top spot after Leipzig drop points; Borussia Dortmund thrash Union Berlin 5-0
Bayern Munich scored three goals in the opening 26 minutes to defeat Mainz 3-1 away on Saturday and go a point clear at the top of the Bundesliga with their sixth straight win.
Bundesliga: League leaders Leipzig suffer first defeat since October, Bayern Munich demolish Schalke to cut gap at top
Bayern cut the gap to just a point with a 5-0 demolition of Schalke in the late game, while Gladbach is two points behind Leipzig after a 3-1 win at home over Mainz, thanks largely to goals in each half from French striker Alassane Plea.
Euro 2020 Qualifiers: In-form Alvaro Morata returns to Spain squad; Sergio Busquets only Barcelona player to feature
Spain have already qualified for Euro 2020 ahead of their final two group matches at home to Malta on 15 November and Romania on 18 November
Champions League: Bayern Munich swat aside Red Star Belgrade 3-0 as Robert Lewandowski scores 200th goal for club
Brazilian Philippe Coutinho had the hosts’ first good chance in the 21st minute, as Bayern dominated possession from the start but had to remain patient
Bundesliga: Bayern Munich endure worst season in seven years as injuries, aging squad rob them of typical dominance
Bayern haven't been helped by injuries to Arjen Robben, Franck Ribery, James Rodriguez, Thiago Alcantara and goalkeeper Manuel Neuer, among others