The Norway international is off contract this month and has just completed an impressive six months on-loan with Genoa.
Ostigard told VG: "He's my big idol. I want to be myself, but I've seen a lot of him. He's a bit of the same type of player as me. And Italian. I thrive in Italy.
"Flexibility is one thing, timing another. My father and I have trained a lot on this. That was his great strength. I've been heading a ball since I was three years old. So you should be good at it."
Of his future, Ostigard recently stated: "If I have to choose between Serie A and the Premier League right now, I choose Serie A, it is a league that suits me very well. I may soon stay here longer than this half year."