It’ll take at least that long for the EU member states to forgive the UK for its fuckery. The memory of Brexit will have to fade enough in their minds before it’s even considered.

• It’s doubtful that the same deal will be on the table, as it would be politically untenable domestically.
• Getting France and Germany on board will be hard, given that they enjoy much more power in our absence.
• The risk of our exit again when our xenophobia acts up would have to be objectively low, or no member state would take the chance on approval lest we fuck over their economy again when we throw an egocentric racist tantrum.