When the accountant hears about a sale
An owner may tell their accountant about a sale only when there is a buyer. By then the deal runs on the buyer’s timetable, due diligence is under way, and the things that take a year or two can no longer be done.
The useful work happens earlier, while the position can still be changed. The signs are in the accounts, so the accountant can see them before a buyer appears.
What you can say
Wording you can use“You have mentioned that you would like to be out in a few years. Some of the planning around a sale has to happen two or three years before it. Would you like an hour with the financial adviser we work with now?”
You are describing a timetable, which is a fact about the rules. Advising on the structure of the sale, or on what the client should do with the proceeds, is regulated advice.