FT SeriesParis Biennale 2018As Paris Biennale opens in the city’s Grand Palais, we assess the trends and speak to the dealers and collectors who shape the fairFeel-good times for the French capitalWill the European art market find a new centre after Brexit?Jean-Charles de Castelbajac at Paris Biennale: flying the flag for styleImbued with a love of history, the fair’s guest artistic director is set to inject flair into the eventNapoleonic artefacts come to Paris BiennaleThis year’s special exhibition features Pierre-Jean Chalençon’s spectacular array of works relating to the EmperorGalleries experiment with alternative models — including sharing spacesFrench dealer Patrick Seguin on his Carte Blanche programmeLarger galleries to subsidise smaller ones at fairsPlus: artist to sell fake Swiss passports in London during Frieze Week; 20th-century Italian art dwindles; Bonhams is soldPresident Macron, African art and the question of restitutionThe French President last year pledged to repatriate African pieces in his country’s public museums. What repercussions could this policy have?