Klopp stated on Friday: "The first thing we must make sure is that we have the squad for the second half of the season.
"Players have longer contracts but everything can happen in the summer.
"We have to see what we do.
"The club's interest comes first and we must make sure we have enough players for different situations.
"It has to be perfect for the player and the club - but if not, the club comes first.
"There is interest in our players but there has been nothing agreed so far."