Giggs was on Monday named Christ Coleman's replacement as head coach of the Welsh national team, coming as his first full-time job in football management.
And while Giggs was able to take plenty of pride in the role, his father Danny Wilson sang a very different tune.
"I should be the proudest dad in the world, as happy as a lark by what he's achieved - but I am ashamed of him. I can't even bring myself to use his name - I refer to him as the ex-footballer," Wilson told the Sun.
"He's put himself first and all he cares about is his TV punditry and opening swanky hotels in Manchester. Now when I see him on TV I switch off, all the family do.
"He is my son and it brings me close to tears to say that my family don't respect him and look up to him. As the eldest he should have been watching his brother's back - not stabbing him in it. He cheated in the worst possible way and is not man enough to apologise for it."