Unsurprisingly Casement is a no-go so there won't be any games in Norn Iron. No chance of getting Windsor Park up to the required capacity and standard.
Was never realistically a goer due to ;
Cost (UEfa specifications make it expensive)
Planning objections & restrictions
Becoming a political football
Good old bigotry & sectarianism.
Just wasted money on a token effort.
No chance with Windsor Park either not enough space to expand even if the political will was there (& it's not, you block ours, we will block yours game).
Of course 20 years ago a proposal was put forward for an all purpose 35,000 seater stadium just outside Belfast as all of the stadiums Windsor, Casement & Ravenhill were getting dilapidated, and could be cost neutral if the existing sites were sold for development. The sporting bodies IFA, GAA & Ulster Rugby all agreed as did British government & Irish Government promised to contribute.
You would think everyone would be happy but step forward the DUP, as the new site was on the site of the old Maze prison (site was actually picked as symbolic of a new Unified Northern Ireland), they couldn't support something that was a shrine to terrorism (1 of the old H blocks was to be kept for historical reasons). An excuse as they didn't want to contribute to something that would benefit Catholics.
So since then £60m spent upgrading Windsor & Ravenhill, & Casement derelict, and now missed opportunity for prestige and badly needed economic boost for the area.