Looks to me to be a late eighties Bianchi Champion d'Italia. Better pictures, depicting things like brake type and make, cranks set, derailleurs, and the like, will help with identification. You can also attempt to determine the bicycle's vintage by applying some of the information contained in How Old Is My Bike?

I hope this is a help and nice find. I love the Celeste green Bianchi bicycles and I often wonder why I let this old Rekord 848 go???