The defender has returned to the club where he started his professional career and is keen to make an impact
The 27-year-old is a product of the club's youth academy, but failed to secure regular first team football during his first spell at the Giuseppe Meazza side.
He earned himself a return to Inter with a string of fine performances for Chievo, though, and is keen to make an impact this term.
"Over these years I always hoped to return to Inter. I worked hard and tried to improve every day in order to achieve this goal," he told reporters.
"Now at this point I need to reset everything and start from scratch, and work even harder to show I deserve to wear this shirt.
"That's why Inter has to be just a starting point for me. I’m happy to once again meet up with all the people I knew seven years ago."
Andreolli could make his official Inter debut in this weekend's Coppa Italia game against Cittadella.