left right FILE PHOTO: Michel Barnier, Chief Negotiator for the Preparation and Conduct of the Negotiations with the United Kingdom under Article 50 of the Treaty on European Union, holds a news conference at the EU Commission headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir/File Photo 1/4 left right Michel Barnier, Chief Negotiator for the Preparation and Conduct of the Negotiations with the United Kingdom under Article 50 of the Treaty on European Union, adjusts his glasses as he holds a news conference at the EU Commission headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 2/4 left right Michel Barnier, Chief Negotiator for the Preparation and Conduct of the Negotiations with the United Kingdom under Article 50 of the Treaty on European Union, arrives to hold a news conference at the EU Commission headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir 3/4 left right FILE PHOTO: Michel Barnier, Chief Negotiator for the Preparation and Conduct of the Negotiations with the United Kingdom under Article 50 of the Treaty on European Union, holds a news conference at the EU Commission headquarters in Brussels, Belgium, December 6, 2016. REUTERS/Francois Lenoir/File Photo 4/4 BRUSSELS Michel Barnier has a dealmaker’s flair for gauging what the other side can accept but as Theresa May prepares to launch Brexit negotiations some EU officials wonder if Brussels’ man can really figure out what she wants. That is a nagging question for European Union leaders who need the veteran French minister and EU commissioner to…more detail