A Credit Suisse First Boston government salesman has exited for Banc of America Securities, where he will assume a role in hedge fund sales. Michael O'Leary, government bond salesman, resigned earlier this month, according to a source close to CSFB. He reported to Michael Furman, head of government and agency sales. Pen Pendleton, CSFB spokesman, confirmed O'Leary's departure but declined further comment. Furman himself recently departed CSFB and could not be reached. O'Leary and Melissa Fox, BofA spokeswoman, did not return calls by press time.