Where did the NFL idea come from?
It's talk from America. The NFL have noticed that their yearly NFL season game at Wembley is always a massive success and they now want to take the next step towards making the NFL a major sport in the UK which they would achieve by letting a franchise set up a team based in the United Kingdom.
Of course, they haven't talked specifics yet but the general idea is solid and is backed by the NFL's players and fans. Now, I say the Ricoh could be a viable option because it's a 32,000 seat stadium and whilst that is massively short of the 70k average attendances in the NFL it's a central location that could be developed.
It would also be one of the biggest available stadiums around should CCFC not play there. Ideally the NFL would want Wembley to be the home of the British franchise but I could definitely see the Ricoh being considered especially with the massive back pockets the average NFL owner has. Redevelopment of the stadium to double capacity would be mere pennies for a rich American Football owner.