The Red Devils were only able to confirm Berbatov's £30million arrival from Spurs at 12.40am on September 2 after a frantic day of negotiations which included intense interest from cash-rich Manchester City at one stage.
Berbatov was immediately whisked away to begin international duty with Bulgaria and will not be formally introduced as a United player until later on Friday, ahead of a debut in Saturday's lunchtime clash with Liverpool.
But Giggs has no doubt the 27-year-old will prove to be a very astute signing.
"Berbatov is a Manchester United-type player," said the former Wales skipper.
"But he also has a big personality, the personality you need to be a success at Manchester United."
He added: "I am glad Dimitar is on the same side as me.
"I have seen his ability at first hand when he played against us for Tottenham.
"I am sure he will be an excellent signing."