England defender Alexander-Arnold missed last weekend’s victory over Crystal Palace due to illness, but he is now in contention to be involved, and Roberto Firmino has recovered from a hamstring injury. James Milner and Neco Williams are also back in training.
Naby Keita could miss the trip to the Brentford Community Stadium due to a knock he suffered against Norwich in the Carabao Cup on Tuesday. Spain international Thiago Alcantara will not also be involved against the Bees.
Speaking to the club’s official website on Thursday, Klopp said: “Trent was not injured, Trent was a little bit ill. He’s back in training, trained yesterday and will be fine.
“Neco made [his] first steps the day before yesterday; yesterday a [recovery] day; will be in training today, if it’s 100 per cent, we will see how he can cope with it.
“James was a similar thing to Trent, so he should be recovered. I saw him running around here, nobody told me differently – I assume he will be in training today.
“Naby probably not. It’s not a serious thing but we have to wait until the pain settles, pretty much. We will see about that. Thiago, no chance.
“Bobby trained already for two or three days, so he is back in contention, let me say it like this. We used him a little bit as a ‘joker’ [in training].
“But he will be in the normal training and then we have to make a decision if we take him with us or not. Porto, 100 per cent. Brentford, we have to see.”