The full-back did not train at Melwood on Monday morning as a precaution after sustaining a slight knock.
Robertson will be further assessed by the club’s medical team in Italy tomorrow to see if he will be available to take on the Italians at Stadio San Paolo.
Jürgen Klopp told Liverpoolfc.com: “Robbo didn’t train today and we have to see. It is not a major thing, it was more precautionary today, but it is not 100 per cent sure [he will be available].
“We will have to test it tomorrow and then we will see.”