Liverpool face potential defensive problems ahead of their Premier League opener against West Ham United on Sunday with Virgil van Dijk and Joe Gomez the only senior centre-backs fit and available, manager Jurgen Klopp said.
Joel Matip (hip) and Ragnar Klavan (hamstring) both missed the 5-0 friendly win over Napoli because of injuries and are doubtful for Liverpool's final preseason game against Torino on Tuesday.
"Joel, we'll have to see," Klopp said, according to the Liverpool Echo. "Klavan, shouldn't be too serious, but if Tuesday is too early, I don't know yet.
"Maybe we will do some magic things with the formation on Tuesday.