Lallana is likely to miss the first leg of the quarter-final at Anfield due to a slight muscle issue.
The playmaker sat out the 3-1 win at Southampton due to the injury; however, Klopp doesn’t believe it to be serious and expects to be able to call upon his services once more this weekend.
The manager also explained why Gomez was among the travelling squad last Friday and took part in the pre-match warm-up with his teammates.
Klopp told his pre-Porto press conference at Anfield: “We wanted to have Joe around, not because he is now 100 per cent ready but it was just nice to have him.