Wolff told the German broadcaster Sky: "Firstly, I know Jos since he was a driver.
"We've both got a friend who was there visiting us, Niki (Lauda) and I were sitting in the office, our two Dutch friends were there so we had a cup of coffee."
But when asked if the meeting is a sign that Mercedes is interested in signing Max, Wolff insisted: "For next year clearly not -- he is not available.
"After that, he is one of the names that you definitely must have on the radar. Max is one of the great formula one stars of the future, but there are many others as well like Valtteri, Daniel (Ricciardo) and Esteban Ocon."
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