Chiesa was initially left out of Liverpool's original selection for the group phase, but he can be added as an injury replacement for Giovanni Leoni, who suffered an ACL injury.
Slot discussed the possibility of Chiesa joining the team during a pre-match press conference on Friday.
"We've looked into the possibility of adding Chiesa to the squad," Slot explained.
"I don't have the most up-to-date information on the process, but I've been told that if a player is injured for more than two months, their team may be able to replace them.
Slot stated that the club is waiting to see if this is a viable option and is currently investigating the situation.
The final decision will depend on the outcome of their investigation and any relevant regulations.