Details of the offer emerged in a previously unseen letter from October 2016 in which Mr Clark said that Nissan would receive the funding as long as it built two new models at its plant in Sunderland.
The government said Nissan's decision was "a blow to the sector" but that no jobs would go as a result. The current government framework agreement envisages leaving the Single Market and the Customs Union., Nissan's former CEO Carlos Ghosn hinted that he would seek compensation if vehicle exports to Europe were subject to tariffs. To meet the changing emissions regulations we've had to invest much more in new powertrains for our future models like X-Trail.
"We will set our ambitions high and vigorously pursue continued access to the European market as an objective in future negotiations".
Clark said in the 2016 letter that government had already been able to confirm £22m of support for the foundry at Sunderland to become a European development centre for the firm's alliance with fellow carmakers Renault and Mitsubishi.
Nissan's decision to divert investment from the United Kingdom has triggered a measured reaction after the joint French and Japanese conglomerate withdrew a plan to develop a next-generation X-Trail SUV plant in the UK.
Nissan originally announced in 2016 that it would be making the new model in the United Kingdom after it had made an acceptable deal with the government.
"Clearly it is bad news for Sunderland but on the other hand they are committed to building plenty of other vehicles there - the Qashqai for example".
"Since that time, as you know, the environment for the auto industry in Europe has changed dramatically".
The firm will still build its new Juke and Qashqai models at the factory which opened in 1986 after then prime minister Margaret Thatcher successfully encouraged Japanese companies to pick the country as a gateway into Europe.
But speaking alongside Japanese Prime Minister Shinzo Abe in Tokyo, she said: "We want to do everything to avoid a no-deal, because that would increase the uncertainty".
Clark said the government would "vigorously pursue continued access to the European market as an objective in future negotiations", adding that: "In any circumstances, the government will ensure that the United Kingdom continues to be one of the most competitive locations for automotive and other advanced manufacturing, within Europe and globally, including sites such as Sunderland which are key to the economy of the North East of England".
Union representatives met Nissan representatives on Monday and said they would push to secure the future of the site.