I can definitely see them selling it, the reasoning for the semi finals etc being played there is due to them trying to pay the thing off. Spiralling construction costs clamped a huge debt on the FA.
In regards to the NFL - no idea on this but maybe they can't fit the NFL pitch on Old Trafford etc?
Agreed the fact the FA have not said an outright no means they are seriously considering it.
As I said in my previous post The Yanks could sell Craven Cottage for 220/230m and have an 80,000 ready to go stadium for Fulham FC if they get promoted.
To me it makes perfect sense for the Yanks to dual use the stadium , and throw a few concerts and boxing matches in as well.
I’m not sure if PL rules allow artificial pitches but that’s what the Yanks will want to install at Wembley , or else do what Spurs are doing and put in a removable artificial pitch but I’m not sure of the logistics of retro fitting one of those