Ferdinand has also hailed the work ethic of Park Ji-sung, who was at his energetic best again in midweek as he notched a crucial goal against Chelsea.
"He must have a different diet to all of us because the way he runs and the energy he has got is phenomenal."
he South Korea international is often overlooked when it comes to key personnel at Old Trafford, but his value is not lost on those who play alongside him.
"The lads in the changing room sometimes laugh at the amount of work that Ji gets through because it is just ridiculous," said Ferdinand.
"We just want to know what he eats pre-match and at home.
"He must have a different diet to all of us because the way he runs and the energy he has got is phenomenal.
"It is great to have him as a part of your team. He is definitely an unsung hero."http://www.skysports.com/story/0,19528,11667_6869782,00.html
星仔