Sir Alex hails incredible Giggs
Sir Alex has heaped praise on Ryan Giggs, labelling him "an incredible human being".
United's most decorated servant netted the winner in last Sunday's FA Cup victory over Liverpool and put in an all-energy display that defied logic for a 37-year-old.
And while his ageing limbs mean he won't play every week, Sir Alex insists he remains a vital cog in the Reds' well-oiled machine.
"He is just an incredible human being," declared the boss. "He defies the logic of forwards when he plays at the level he did last Sunday.
"Obviously we know how to manage him. He doesn't play every week but he makes a contribution that lifts the team. He did that in the second half last week. He was outstanding. His fitness was fantastic. He kept going for the whole 90 minutes.
"He has been doing that for two decades. No other player has ever done that, or is ever likely to. He is quite an amazing man."
With Ji-sung Park still away on international duty, Sir Alex says keeping Giggs fresh over the next few weeks will be vital to United's title charge.
"Ji-sung Park is a loss because he makes a tremendous contribution to our team," added the Scot. "Keeping Ryan fresh is going to be the secret for us."