The 31-year-old has struggled with a string of injuries in recent months and he has been kept out of action at Anfield for long spells.
The midfielder is now available for selection again after having worked his way back to full fitness following a total of just 31 appearances in all competitions over the last two seasons.
Lallana now has a challenge on his hands as he looks to try and break into the first team at Anfield in the coming weeks and months.
Arsenal legend Keown seems to think that Lallana would be wise to consider making a move away from the Merseyside club if he is unable to hold down a regular spot in Jurgen Klopp’s team this season.
Speaking in an interview with talkSPORT, Keown said: “I’m a massive fan of Lallana, and England manager Gareth Southgate really likes him too.
“He’s a player that’s really suffered with injury and he’s hit the buffers because he is simply not fit enough often enough to play for Liverpool.
“He’s only played a handful of matches over the last couple of seasons, but he’s got a clean bill of health now – can he get back into that Liverpool team? Can he fit into it?
“If he’s now fit again he has to have a conversation with the manager, because it hurts you to the core every Saturday when your name is not on that list. What on earth are you there for otherwise?
“He may have to move on if he doesn’t get into that team within the next four or five months.
“There are an awful lot of games coming up with the Champions League and cup competitions, and if he doesn’t play he’ll be seriously considering moving to another club.”
Liverpool FC will return to Premier League action on Sunday afternoon when they travel to Stamford Bridge to take on Chelsea FC.
The Reds are currently flying high at the top of the Premier League table and have won all five of their opening games this season.
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