Salah was an unused substitute in Saturday’s 2-1 win at Crystal Palace as he nurses an ankle injury, but has been restored for a crucial European tie at Anfield.
Alisson starts in goal against the side which he produced his biggest save as a Liverpool player against last December, in what is the No. 1’s 10th appearance of the season.
After a disappointing 2-0 loss away to Napoli last time out, Liverpool will be desperate to seal a more positive result this evening.
To do so, Klopp will likely rely upon Salah, Mane and Firmino to provide the cutting edge, though he also has the likes of Gini Wijnaldum, Alex Oxlade-Chamberlain and the returning Xherdan Shaqiri on the bench.
Substitutes: Adrian, Alexander-Arnold, Lallana, Wijnaldum, Oxlade-Chamberlain, Shaqiri, Origi
Napoli: Meret; Maksimovic, Manolas, Koulibaly; Di Lorenzo, Allan, Fabian, Mario Rui; Lozano, Zielinski, Mertens
Substitutes: Ospina, Luperto, Elmas, Gaetano, Younes, Callejon, Llorente