*K+S CFO: NO REASSURANCE FROM POTASH CORP. NOT TO BREAK CO. UP
*K+S CFO SAYS PRICE IS MAIN OBJECTION TO POTASH CORP BID
*K+S WILL REVIEW ANY NEW POTASH CORP PROPOSAL `WITH UTMOST CARE'
*K+S SAYS POTASH LABOR COMMITMENTS WOULDN'T BE ENFORCABLE
*K+S SAYS POTASH CORP. OFFER GUARANTEES HAVE `NO RELIABILITY'