He spent only a year in Serie A and failed to make an impact, so is returning to Holland.
"I am going from Inter to Twente for 6m," he told FCInterNews. "I signed a four-year contract, but I would prefer for the financial details to remain private.
"I came to Inter in order to show who Luc Castaignos really was and what I am capable of on a football field, but had very few opportunities to do that.
"In any case, I hope this year can be better for the Nerazzurri, because they do not deserve to experience another season like that.
"I chose Twente because I wanted to join a team where I knew I'd have a better chance of playing and improving."