Speculation has claimed Hamann, who played under the Magpies' new director of football Sven-Goran Eriksson at Manchester City, has been offered a player/coach role at Meadow Lane.
Hamann is available on a free transfer after being released by City in the summer and the 35-year-old German has been linked with the likes of Hull City, Preston North End and 1860 Munich.
McParland told the Nottingham Evening Post: "It really baffles me, some of these people who make these stories up.
"I don't know where they come from. I have a chuckle at times."