The Reds face off against the German champions in a week, in a first leg round of 16 game.
And it appears they will be without Dejan Lovren, who has been out with a hamstring injury since early January.
Joe Gomez is another defender who will not be fit in time for the game.
"Dejan is not here and Joe (Gomez) is not here [Marbella training camp]," said Klopp, speaking to liverpoolfc.com.
"That's never a good sign, I would say, but we will try everything to make Dejan available for Munich. It will be a tight race.
"For him, it makes sense in the moment to be in another place to do what he has to do. It wouldn't have helped if he was here, so we will try everything – that's clear."