UPDATE 2-Cerberus eyes BTG Pactual assets as bank sells units
SAO PAULO, Dec 3 (Reuters) - U.S. buyout firm Cerberus Capital Management LP has shown preliminary interest in Grupo BTG Pactual SA's stake in debt collection company Recovery do Brasil, which the embattled Brazilian investment bank wants to sell to raise cash, a person with direct knowledge of the matter said on Thursday.