brussels european union reconsider brexit strategy britain fail improve offer brussels significantly end year european council president donald tusk say tuesday effectively rule eu leaders agree british demand open talk future free trade pact tusk chair summit prime minister theresa may brussels next week say still hop move december respond renew suggestions may government britain could simply leave eu march 2019 without negotiate settlement tusk say eu work deal scenario warn end year progress still slow would time think eu negotiators step contingency plan breakdown talk warn time short agree even basic divorce treaty time pass less likely negotiate kind bespeak transition future close trade relationship may say want hear london uk government prepare deal scenario tusk tell eu regional leaders brussels eu work scenario negotiate good faith still hope so-called sufficient progress possible december however turn talk continue slow pace sufficient progress reach together uk friends think head though tusk specify might mean eu officials say without agreement move second phase talk future early next year insufficient time negotiate much limit exit treaty may lend new impetus negotiations make concessions speech florence last month new round talk brussels week ahead summit expect even touch much london may pay brexit big three key areas eu demand sufficient progress 27 national leaders could offer may hope open trade transition talk december could help struggle party rival push clean break hard brexit diplomats say tusk warn indication may expect eu ease much week see sign public tension may say monday ball eu court make concessions european commission retort britain s. press sport metaphor tuesday eu negotiator michel barnier tell reporters call constructive lunch british brexit secretary david davis brexit game technical talk among officials schedule wednesday british officials reject suggestions available negotiate day originally leave blank schedule agree two side eu review brexit approach deal december tusk