Billy Davies, the ex North End boss confirmed the offer had been made but Deepdale chiefs insist Mckenna is going nowhere until a realistic valuation of the club skipper is put on the table.
Preston are believed to want around £750,000 for the 31 year old midfield man with replacements already believed to have been lined up for the start of the new season. Mckenna is currently in Austria on a training camp with the rest of the squad.