The 22-year-old Spanish left-back has undergone a successful trial with Forest, after leaving Cordoba at the end of last season, and will now make his new home in the East Midlands.
Forest boss Dougie Freedman was impressed by Pinillos during his training stint with the club which included a 77-minute role in a recent pre-season friendly against Doncaster Rovers.
#NFFC have announced the signing of Daniel Pinillos. http://t.co/mcKkSyJUbepic.twitter.com/yiuAwgj5xl
— Nottingham Forest FC (@Official_NFFC) July 30, 2015