That's also excellent news.
Not sure how many MiGs there are to be had from European countries (eg I know Poland has more of them) but they might as well be used in Ukraine as become obsolete.
Ukrainian pilots know how to fly them. And so they have immediate uses. Hopefully they will be used to help the upcoming counter-offensive to liberate the rest of the country.
Meanwhile NATO can replace its own planes with Western ones. And NATO countries can train a whole new generation of Ukrainian pilots on such planes as well, so that they can have them later and use them when they are ready.