Lallana is pleased with the signing of his former Southampton teammate.
Clyne completed his move from St Mary's yesterday in a deal thought to be worth around £12.5 million, and has been a key target for the Reds this summer as they looked to address their problems at right-back.
Over the past year, the 24-year-old has become one of the more highly rated players in the division and was linked with a move to fierce rivals Manchester United.
Lallana, who has played with Clyne at Southampton - and more recently with England - told the club's official website: "When Southampton signed him from Palace, you could see he had potential. Since then, he's developed and learnt the game - he's turned from a kid into a man on the pitch.
"He's as solid as they come for a right-back and getting forward, he's got goals in his locker. In one versus one situations defensively, he's the kind of full-back you just don't want to come up against."
Clyne is the sixth signing the Reds have made this summer as they look to make some changes to the squad in order to improve on last season's disappointing sixth place finish, which also saw the Reds fail to pick up any silverware.
Lallana seems to be happy with the business the Reds have done, which has seen James Milner, Danny Ings, Adam Bogdan, Joe Gomez and Roberto Firmino arrive at Anfield.
"It's a great variety and added to what we've already got, hopefully it can be a good combination for success," he enthused.
The pre-season tour is going to be key for Liverpool as Brendan Rodgers will try and get all of his new players to gel with the existing members of the squad and hit the ground running on what looks to be a pretty difficult start to the season for the Reds.
It may not be the end of the transfer business as Liverpool are still said to be targeting a striker, while there could be a few players leaving the club this summer following the recent arrivals.