“We missed a few players in training this week,” he said at his pre-match press conference on Friday afternoon. “No chance for Henderson and Sturridge.”
However, there was further bad news with the manager revealing that Divock Origi has also not trained.
“The icing on cake was Origi not training yesterday because he didn’t feel too good,” explained Klopp.
That means Klopp has spent the week preparing for the trip to the top-four rivals without a recognised centre-forward.
But Firmino, who was in light training on his own on Wednesday and Thursday, will hopefully be able to take partt in full training on Friday afternoon and therefore be ready to lead the attack on Sunday afternoon.
Should Firmino and Origi be both unavailable, it would likely mean using Sadio Mane as an auxiliary centre-forward.
Youngster Ben Woodburn could then come into contention for a starting role, but all being well Firmino will be ok.
Meanwhile, Klopp confirmed that “at the moment” Henderson should be back available after the international break when the Reds host Everton at Anfield on April 1.
UPDATE: Origi took part in full training on Friday afternoon, but not clear if Firmino did or not.