The striker was originally signed in February by the Blucerchiati, but spent the remainder of the season on loan at Inter, who hold still hold a buy-back clause .
“At last the moment that I was waiting for has arrived. I’m happy to be here and hope everything goes fine,” Bonazzoli told Sky Sport Italia.
“I had to grow up in a new city and at an important club. Now the objective is to do better than last season, I have to show that I deserve a place at Sampdoria.
“Inter’s buy-back option? I honestly am not thinking about that. Now my future is with Sampdoria and the rest, we’ll see.”
Bonazzoli made 7 appearances for the Inter first-team this past season, but failed to score.