Poli was looked at by a number of clubs following Samp's relegation to Serie B, but it seemed as if he would be staying at Marassi.
"It was all a bit unexpected, but I'm over the moon about it," the loan signing stated. "It's a terrific opportunity for me and a dream come true.
"I'll be taking up the challenge with determination and will be giving it everything I can. I have come to a really great club and it's an honour for me.
"I'll do all in my power to deserve this Inter shirt."