Vardy will be involved against Jose Mourinho's team on Thursday, in the first leg of the Europa Conference League semi-final.
Rodgers said: "I am not sure (he could play 90 minutes) but he will be in the squad and that is a big plus for us. He is a top player who has that streetwise element, cuteness and experience.
"Roma have a great manager and fantastic players.
"We will have to be at our best over the two legs to reach the final."