According to Liverpool Echo's Liverpool team reporter Ian Doyle, Isaac is not Liverpool's current priority, and Liverpool still wants to sign Crystal Palace central defender Guy.
Kunsa left the team and Joe Gomez was injured, and Liverpool only had two genuine central defenders left in the game against AC Milan.
Indeed, Isaac would be a very popular signing option, but he is not the current priority.
Liverpool still maintains strong interest in Crystal Palace defender Guy, with his contract only 12 months left, after the team has been taking a wait-and-see attitude.
But the current situation may force the Reds to speed up their operations, and signing a new central defender has become a priority for Slott and athletic director Hughes.