Instead of training at the Parc des Princes after their flight to France, the Reds opted to fulfil their media obligations before travelling.
This set up an anxious wait for supporters after it was revealed on Monday night that Mane was suffering from illness, with a late decision to be made over whether he would join the squad.
But the winger took part as Klopp oversaw a light exercise at the club’s training ground, in front of journalists and camera crews.
It remains to be seen how Klopp sets his side up, however, having kept faith with a 4-2-3-1 shape for five of the last six games.
He has retained a 4-3-3 for all of the Reds’ ‘big’ games so far, however, including the 3-2 win over PSG at Anfield in September, which suggests he could switch back for this tie.
Liverpool Squad in Training on Tuesday
Defenders: Van Dijk, Gomez, Lovren, Matip, Alexander-Arnold, Robertson, Moreno
Midfielders: Keita, Wijnaldum, Fabinho, Henderson, Milner, Chirivella, Christie-Davies
Forwards: Firmino, Salah, Mane, Shaqiri, Sturridge, Camacho
* Goalkeepers not part of open session.