The midfield star made his return in the goalless draw with West Brom, but will have a bigger part to play next season.
Speaking ahead of the match with West Brom, Rodgers stressed how important his summer signing was to Liverpool's success.
“We need to make sure he’s at a good level of fitness before he comes back," said the Liverpool boss.
“With Adam in the moments when he has played, he has showed his talent. Earlier in the season he went on a run of games which showed he’s a great asset for the club.
“It was just a shame that during that run he got injured.
“He has shown what his capabilities are. It’s all about keeping Adam fit.”
Lallana had a brief run out in the draw with West Brom, but with 5 goals and 4 assists this season, it is someway off the 10 strikes and 8 assists he managed at Southampton last year.
The 26-year-old has suffered an injury interrupted first season at Anfield after his big money move from the Saints last summer.
Knee, hamstring and groin injuries have stopped the attacking midfielder from getting the consistent game time that would have helped him settle at his new club. As a result, the England international hasn't played more than seven consecutive games in the league.
Lallana's importance is likely to be even higher come the start of the new season given the departure of Steven Gerrard this summer.
The former Southampton captain's creativity and passing ability could be utilised even more in midfield, and the big thing will be keeping him from those niggling injuries so he can build up a run of games.