There will be no retraction, and certainly there won't be a lawsuit, except a PR lawsuit that Trump likes to file just for the show. He does have a history of that.
And I do wish someone could explain any kind of rationale for the NYT to make up anything related to Trump's taxes. Those are objective, easy to determine, and easily proved - a return was filed, what numbers were on that return, and there's only 1. So if they fabricated something, Trump copies one page of a single return, releases that, and then can beat the NYT and the deep state and liberals about the head and neck at every rally and every Hannity spot through the election. It would be disastrous for the NYT and do nothing but HELP Trump get reelected, by proving to the public how unfair everyone is etc. So the theory that the NYT isn't REALLY confident that what they have and reported on is accurate just makes no sense at any level, and the idea that they'd fabricate these numbers is just downright laughable. This isn't a reported conversation - these are very easy to prove facts. E.g. He either paid $750 in 2017 or he didn't. One page of one return resolves that issue definitively.