"I just had to wait. So, for sure, as an athlete, as a driver, it's not an ideal situation. You can't be completely with peace of mind and focus on the job and feel mentally free and in the right place. It's tricky.
"When that continues, you know, year after year, every single year of your career, at some point it's getting a pain in the ass – so it's definitely nice to get the contract signed. But, it's going to be the same story next year."
And Wolff says he will keep the Finn's concerns in mind when plotting the future course for the Silver Arrows next year, when both Bottas and Hamilton will enter the final year of their existing deals.
"Apparently it has an influence on him so I will try to take that into account and do my job better," the Mercedes team boss said.
"In 2021, all the doors are open: none of our drivers have contracts with the team, so it will be a very interesting situation."
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