Liverpool manager Jurgen Klopp admits he has no timescale regarding goalkeeper Alisson's return to fitness.
Alisson has been out of action since the opening day of the season after suffering a calf injury against Norwich, with Adrian deputising in his absence.
Speaking at his pre-match press conference, Klopp said: "We had lunch together and he is improving.
"A really serious injury but we don't know exactly. There is no timescale."
Klopp also confirmed that Naby Keita is nearing a return to full fitness, and could be back in training as early as next week following a hip problem.
