Argentine first division side Colón hired DIEGO OSELLA as its new coach. Osella was officially introduced as Colón's new coach on Wednesday (CLARIN, 1/2). ... Former ManU striker OLE GUNNAR SOLSKJAER "has been appointed Cardiff City's new manager." Solskjaer "has agreed a 12-month rolling contract with the Bluebirds." Solskjaer, "who met his new squad at the club's training ground on Thursday, joins from Molde, whom he led to two Norwegian league titles and a cup win." Solskjaer's first game in charge "will be against Newcastle in the third round of the FA Cup on Saturday" (BBC, 1/2). ... VALENTIN IVANOV, the referee who "broke FIFA records by brandishing four red cards in one World Cup match, was named the chief of Russia's refereeing committee on Monday." Ivanov replaces ROBERTO ROSETTI "in the post" (R-SPORT, 12/30).