This is applicable to the whole WTC site but, and it seems more likely they stay Downtown since these are all well U/C. Article gives a pretty good summary on the leasing details at the WFC as well.
Vacancies only temporary
Last Updated: 10:24 PM, September 5, 2011
Posted: 9:59 PM, September 5, 2011
Steve Cuozzo
"Speaking of Downtown, Citibank plans to leave behind 111 Wall St. and is searching for 600,000 square feet elsewhere to replace it, sources said -- either Downtown or in New Jersey...
The bank occupies most of the 950,000-square-foot building under a long-term ground lease that expires in 2017, sources said.
“They want a more modern building,” an insider said..."
http://www.nypost.com/p/news/busines...QbKkBMzmI7txkN