The 28-year-old is a free agent, and has been on trial with the Glovers.
Boss Gary Johnson said: "Because he was a free agent and has international clearance. He holds an Italian passport and so it's been much easier getting him on board.
"We are happy to have him here and have a good look at what he can do for us."
Midfielder Andy Lindegaard has jleft Huish Park and joined Crawley on loan.