The England international swapped St Mary's for Anfield in the summer and faces his old club today.
The England international was a fans' favourite on the south coast but left to take up the opportunity to play in the Champions League this season.
Lallana has suffered from injuries since moving to Merseyside, but has shown in recent months that he can be an important player for Brendan Rodgers' side.
Ahead of today's clash, it is worth comparing the playmaker's attacking statistics from last season at Southampton to how he has done since moving to Liverpool - the results are below.
|2014-15||Team||Assists per game||Passes that lead to shots||Goals per game||Shots on target||Accurate crosses||Dribbles||Accurate passes||Apps|
|2013-14||Team||Assists per game||Passes that lead to shots||Goals per game||Shots on target||Accurate crosses||Dribbles||Accurate passes||Apps|
Given that Lallana has played fewer games this season than he did last term, the stats are based on an average-per-game tally.
There are two areas that the attacking midfielder's numbers come out better this season than last.
Lallana has provided a slightly better assists and goals per game ratio since moving to Anfield, but the rest of the stats show that he was more effective last season with the Saints.
He created more chances for team-mates, had more shots on target, delivered more accurate crosses, beat opponents more regularly and completed more passes last term with the south coast side than he has done this term at Liverpool.
The home crowd's reaction to Lallana's return will be interesting today, but it appears that the England international has work to still do at Anfield to reach the heights he set last term with Southampton.