Lallana hasn't featured for Liverpool since the 1-1 draw with Manchester City last month.
The 28-year-old picked up a hamstring injury on international duty with Gareth Southgate's England squad and there were question marks whether he would return before the end of the season.
But Freelance Injury Data Analyst, Ben Dinnery, claims Lallana is ahead of schedule on his rehabilitation.
Adam Lallana could return to face Watford
Jurgen Klopp will be desperate to get Lallana back into his first-team
— Ben Dinnery (@BenDinnery) April 19, 2017
This weekend's match against Crystal Palace is likely to be too soon for Lallana to return but Dinnery claims the midfielder is eyeing a return for the match against Watford.
Dinnery said on Twitter: "Adam Lallana has stepped up his recovery from the thigh injury he sustained on #ENG duty with a view to returning vs Watford in GW35. #LFC"
Lallana began the season in sensational form for Liverpool, scoring seven league goals in 2016 but has failed to find the net since the turn of the year.
A post shared by Adam Lallana (@officiallallana) on Apr 19, 2017 at 5:21am PDT
Get Quotes on Home Insurance
Liverpool fans react to Adam Lallana return Wed, April 19, 2017
Click through the gallery for the best reactions to Adam Lallana returning to Liverpool action
Play slideshow Instagram – @officiallallana 1 of 10
Click for the best reactions to Adam Lallana returning to Liverpool training
But Jurgen Klopp will be desperate to have the England international back into his first-team plans with the run-in for the top four heating up.
Liverpool are currently third in the league but Manchester United, in fifth, are six points behind with two games in hand.