The South American could make his return to his former home on Thurday night when Liverpool take on Borussia Dortmund in the first leg of their Europa League quarter-final.
Firmino swapped Bundesliga side Hoffenheim for the Reds in a £29m deal last summer under Jurgen Klopp’s predecessor Brendan Rodgers.
The 24-year-old has proven a big hit on Merseyside after a return of nine goals and eight assists in his first season in the Premier League.
Firmino has missed Liverpool’s last two games due to a hamstring injury but the Brazilian playmaker attended Klopp’s training session at Melwood on Wednesday.
However, not before a trip to the barbers to ensure his hair was in tip-top shape ahead of Thursday’s Europa League clash.
Firmino hasn’t played for Liverpool since their 1-1 draw with Manchester United in the Europa League in March.
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