I've watched Nocioni twice this year and both times he appeared slower than I remember, especially laterally. He also has numbers that are slipping everywhere but in his scoring. His FG%, his 3PT FG%, his FT%, and his rebounding number are all off this year.
I would wait and make sure he is 100% healthy and that there isn't a serious drop off in his physical condition and game occurring. Patience in this deal will be key before making a decision to bring in a 29 year old guy with heavy numbers on his contract for the next three years.