"The DUP has been discussing these matters with the government for some time and we support the concept of maintaining a common travel area between the United Kingdom and Irish Republic and share the government's view that modern technology can help with monitoring the movement of goods across the border in the event of the UK reaching a new free trade and customs agreement with the European Union", he said.
The papers will outline the UK's negotiating position on areas such as our customs arrangements, including the issue of whether there should be a border between Northern Ireland and the Republic. Before the UK-EU Brexit talks resume at the end of this month, the government wants to fix the damage caused by summer headlines about Brexit splits. The UK wants to start talking about its post-Brexit relationship with the EU in order to reassure anxious businesses, citizens and investors, but the union has insisted that first exit arrangements should be determined.
"These papers show we are ready to broaden out the negotiations", a source told CNBC.
With Ms May due to return from her summer holiday, the article appeared created to end party feuding as well as ongoing speculation that the United Kingdom might somehow be able to salvage membership of the single market through negotiations with the EU.
Former top British diplomat Simon Fraser said last week the government needed to put forward a clearer position in order to move forward with the Brexit talks.
But in a joint article for The Sunday Telegraph newspaper, they agreed there should not be a "cliff-edge" when Britain leaves in March 2019.
Brexit Secretary David Davis said Sunday the papers would mark an "important next step" towards delivering on last year's vote to leave the European Union.
Free movement for Irish citizens in and out of Britain is expected to continue after Brexit, with the establishment of a Schengen-style area between Ireland and Britain created to resolve the border problem.
The Sunday Telegraph newspaper reported last week, citing three unnamed sources, Britain is willing to pay up to 40 billion euros ($47.1 billion) to the European Union as the bloc wants considerable progress on settling Britain's liabilities before Brexit talks resume.
The UK formally triggered the Brexit process on March 29 and divorce negotiations officially began on June 19.
Mr Davis is due to embark on a third round of Brexit talks with the EU's chief negotiator Michel Barnier in the Belgian capital at the end of August.