Outgoing U.N. Secretary-General Ban Ki-moon, a leading presidential hopeful, allegedly received bribes worth $230,000 (280 million won) from Park Yeon-cha, an entrepreneur who was at the center of a bribery scandal involving former President Roh Moo-hyun and his aides, according to media reports. Citing sources close to the businessman, the weekly magazine Sisa Journal reported Saturday…