These are rather obvious hints that the preferred solution for the Irish border is to have the United Kingdom in the customs union and EEA.
"The principles reflected in this paper must underpin any arrangements and solutions to be proposed, developed and agreed in future negotiations", the statement said.
That is something Prime Minister Theresa May has said would not happen, though her cabinet is split on the issue.
Davis also indicated that his team at the Department for Exiting the European Union "may well seek a customs agreement for that period and a similar arrangement on the single market provisions" during the transition period, although he acknowledged that was a matter for negotiation.
"In the case of the Northern Ireland border we need something different even if the solutions don't fit the way we conventionally do things".
"Creativity and flexibility can not be at the expense of the integrity of the single market and customs union", Barnier said.
"Having the external border of the European Union in between Ireland, North and South, is not a good situation to be in".
Lord Jay of Ewelme, told HuffPost UK ministers needed to explain "pretty quickly" the details of how a soft border with the EU could be maintained if the UK leaves the customs union and single market.
The EU has refused to broach any aspect of the future trade relationship until Brexit talks had achieved sufficient progress on citizen's rights, the Irish border and the UK's financial bill to leave the bloc.
"I am confident that, by using the most up-to-date technology, we can get a non-visible border effectively operational along the border between Northern Ireland and [the Republic of] Ireland".
The U.K. and the European Union have both said they want to avoid a return to a hard border between Northern Ireland and Ireland or do anything that would risk destabilizing the peace process that ended decades of violence in the 1990s.
"The creativity and flexibility can not be at the expense of the customs union and the single market", he said, referring to earlier comments from UK's top negotiator, David Davis, on the need for more EU flexibility. "We will also highlight the consequences for Scotland if an orderly withdrawal and transition can not be agreed between the United Kingdom and the European Union".
The Irish Wine Association has launched the Irish Wine Market Report 2016, calling for an alcohol excise reduction in the upcoming Budget on the basis that Ireland's penal excise rate is bad for jobs, consumers and tourism.