"Unfortunately, the damage is such that it will likely mean Adam is out for a couple of months not weeks", he told Liverpool FC's official website.
The excitement is beginning to mount as Liverpool play their final friendly before the season officially starts. "We know what we see in the players and we know what we have to do", he said.
Lallana will be ruled out until the end of September and will miss Premier League clashes with Arsenal and Manchester City.
Liverpool are competing in European football's premier competition for only the second time in eight seasons after finishing fourth in the Premier League last term.
Nagelsmann, who only turned 30 last month, is one of the most highly-rated young trainers in the game. Actually, it was exactly what I expected when I had a look - if there's a choice we always seem to take the German team.
What would a Cubs-Nationals playoff series look like?
CHICAGO - Chicago Cubs shortstop Addison Russell was placed on the 10-day disabled list Friday because of a strained right foot. In his last 10 games at Wrigley, including the playoffs, Murphy is batting.526 (20-for-38) with four home runs and six RBI.
There is a real lack of big-game experience in European competition or even global level which could cause Hoffenheim some troubles in their first continental campaign.
The first legs will be in Germany and Glasgow, on August 15th or 16th.
The tie will also pit Reds forward Roberto Firmino against his former club, making them familiar opposition for the Brazilian as well as Klopp, who has faced them 16 times while in charge of Mainz and Dortmund (winning five, losing five, and drawing six).
When he selects his eleven for the first game of the season against Watford next Saturday, the German thinks it is inevitable that some players will be angry at being left out, saying some will find it more "difficult to play all the time".
The 10 winners from the Champions League play-off stage will join the 22 teams who have already qualified for the group stage.
Klopp, whose side beat Crystal Palace 2-0 in midweek to reach the final, is still hoping to bring in Leipzig midfielder Nabi Keita, with Liverpool set to return with a final offer of around $97 million for the Guinea worldwide.