Rooney has shown impressive form recently and got his first four-goal haul in the victory over Hull last week.
Giggs believes the 24-year-old is now ‘getting nearer’ to Lionel Messi, Kaka and Cristiano Ronaldo.
“He is getting nearer that group,” said the veteran Welshman. “You have seen it for England and for us on the bigger stages. That is what all the top players do.
“The best thing is that Wayne is still developing. He is 24 now but he is only going to get better.
“His appetite is strong and he is a great player to have in your team.”
