"It's a really tough thing to deal with and in the future we have to change it. They play the World Cup, then the Nations League, next summer is the final of the Nations League which is really crazy," Klopp told reporters.
"Everything is now so important in football and we have to collect their bones afterwards, more or less."
Klopp is currently leading Liverpool on their pre-season tour of the United States, which begins with a game against Borussia Dortmund in the International Champions Cup on Sunday.
(Reporting by Aditi Prakash in Bengaluru; Editing by Peter Rutherford)
