WCRS, the london agency of Havas-owned Arnold Worldwide Partners, is expected to complete a management buyout from Havas this week. Havas will keep a minority stake in WCRS, which will still work with the Arnold network. ... Viacom's MTV Networks Latin America will launch a Spanish-language version of VH-1 in Latin America, starting with Mexico in the second quarter of 2004. ... The annual agency census from the U.K.'s Institute for Practitioners in Advertising found that employment at U.K. ad agencies fell for the third straight year, to 14,036 people in 2003 from 14,200 in 2002.