The Central Group, a giant Thai conglomerate, is reportedly closing in on a deal to buy BT/Arnotts from the Weston family.  A message was sent to BT/Arnotts staff today, telling them not to believe anything in the press until there’s an official announcement. Which does rather suggest an official announcement is impending.  The Central Group is a diversified retailer, based in Thailand but with operations in Vietnam, Sri Lanka, Malaysia, Indonesia, Germany, Switzerland, Denmark and Italy.  The Central Group is owned by the Chirathivat Family. The Chirathivat’s got their start in 1956, when they opened their first department store in…