Rolf Langhammer and Dennis Snower say, in case of a Brexit there have to be exceptions around the Irish border.
Excerpt from the Article
(...) Such political will could certainly help the contemporary Brexit experience, the economists say. Brussels has a history of exceptions, Mr. Langhammer said, so why not now? Even at present, there isn’t totally free movement of goods, capital and services in the EU, he noted. People are labeling post-Brexit trade exceptions as “cherry picking” but this is nothing new. And in the context of possible exceptions around the Irish border, Langhammer and his colleague, Dennis Snower, urge both sides to find a solution. The EU can still make exceptions — even now.