The former Liverpool defender says the midfielder has been "completely transformed" at Anfield under Jurgen Klopp.
Liverpool legend Jamie Carragher has told talkSPORT that Adam Lallana is a completely transformed player under Jurgen Klopp and claimed that the midfielder is technically is good as any England international.
Lallana has enjoyed a much-improved second season at Anfield since his move from Southampton in 2014, and has scored seven goals and contributed seven assists in 48 appearances in all competitions.
The England star was far from a flop in his debut campaign, but recent months have seen him recapture the kind of form which persuaded the Reds to pay around £25 million for his services two years ago.
The 28-year-old looks ever inch Klopp's type of player and has become an integral player in attacking midfielder, playing off the striker alongside Philippe Coutinho.
Carragher believes Klopp's style of football suits Lallana perfectly, and suggests that there is no player technically better than the midfielder in the England squad.
The former defender told talkSPORT: "There have been three of four players who have been completely transformed since Klopp come and Lallana is one of them.
"Technically he is as good as anyone when you see the England squad. I’ve always just wanted him to get more goals, more assists and be more aggressive in the attacking third and that is what we have seen under Jurgen Klopp.
"Before Klopp came in you were actually thinking whether the club would move him on. But you look at him now and he is an integral part of this Liverpool team and Jurgen Klopp’s vision for the future."
Lallana has been a key member of the Reds' Europa League campaign this season, scoring in the group-stage draws with Bordeaux and Sion and netting the third in the 3-0 semi-final second-leg victory over Villarreal.
The midfielder has started every game at the last-16, quarter-final, and semi-final stages of the competition and looks a shoo-in to be named in the starting XI to face Sevilla in the final in Basel tonight.