Scans have confirmed he suffered only a minor groin strain while training with the national team on Tuesday.
The 30-year-old missed the summer’s World Cup following a season disrupted by injury but is expected to be available again before the end of a month that includes Liverpool’s first Champions League fixture of 2018/19, against Paris St Germain.
“I’m pleased I’ll be back available for Liverpool, both domestically and in the Champions League during September, and then England again for the next break,” Lallana told the club’s official website.
“It’s a minor setback, which isn’t ideal, as I’ve been in great shape until now but it’s positive news that it’s only a brief lay-off.
“I know I can make a significant contribution over the course of a long season and that’s where my focus will remain, with so much to play for.
“Doing my best and giving everything for my team-mates, management and supporters of club and country is all that matters.
“I’m back at Melwood making sure my time off the pitch is as short as possible, so I’ll be supporting Gareth and the boys from up here.”
Luke Shaw revealed he almost lost his leg in the horror injury that led the Manchester United defender to consider quitting the sport.
Now, after three tough years, the rejuvenated left-back is more determined than ever to confound the doubters and reach the top.
Shaw could this week make his first England start since facing Switzerland in September 2015 – just a week before suffering a hideous double leg break in a Champions League match at PSV Eindhoven.
It cruelly halted an exceptional start to his second season at Old Trafford – yet it was nearly so much worse.
“I nearly lost my leg,” Shaw said. “I was really close to actually losing my leg. I never knew that until six months later when the doctor told me.
“At the time, they were thinking about flying me back (from Holland) and if I’d have flown back, I would probably have lost my leg because of the blood clots and stuff in the leg.
“I’ve got – I don’t want to talk about it too much – two scars down the side of my leg where they had to cut it open and pull them out because of how severe it was.
“But I don’t really care about that anymore. I feel really strong – and my right leg is exactly as it was before my leg break.”
Shaw feels better than ever and is driven to succeed having won over Manchester United manager Jose Mourinho and earned an England recall.
It leaves the 23-year-old grateful to those who supported him through the dark times, from friends and family and those at United to the psychologist he has seen since the injury.
Shaw continued: “I’d be lying if I said I didn’t sometimes think about stopping playing football.
“But I had a lot of good people around me, a lot of good friends and family. They helped me through it.
“But this is what I want to be doing. I want to be playing in the biggest games possible, I want to be winning trophies, I want to be doing this kind of stuff.
“That’s my motivation and I want to one day be recognised as one of the best full-backs in the world.
“I’ve got a lot of work to do but that motivation is there really highly, and I want to do that.
“I had a lot of complications with my leg and that was the really hard moment for me in my career.
“But, like I said, that’s in the past. Whatever happened has happened, and I don’t care about that any more. I care about what’s happening now, right here, right today and forwards.
“Everyone really seems picks up the negative stuff…the way I was going, it was easy to write stories about everything that was bad. But no-one wrote anything good that (was) said.
“I am sure all of them would have said good things about me. But it was never noted down, was it? Nobody said anything about that, so it was always negative stuff.”
Former Arsenal defender Sol Campbell believes Pierre-Emerick Aubameyang must fire consistently if the Gunners want to qualify for the Champions League.
Aubameyang opened his account for the new season in the 3-2 win against Cardiff City on Sunday and Campbell insists the striker must be more prolific in front of goal during the rest of the season.
Watch what Campbell said below: