The midfielder is to undergo a medical with the Serie A new-boys this morning.
"Sassuolo behaved well with me and with Inter, so tomorrow I will have a medical," he told Sky Sport Italia.
The deal is a loan with option to buy half his contract at the end of the season.
"I want to have a great year, although it will be different to Inter. I want to play, that is what I want. Not being part of pre-season training with Inter was a tough moment for me.
"My agents and my family stayed close to me, but this is another step and nobody knows what football can hold. I am happy now."
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