He told TVI television channel: “It is a significant investment in Manchester United’s prospects for the next 10 years.
“It’s worth imagining a forward line with Rooney, Ronaldo, Anderson and Nani, these are players with enormous creativity.
“These signings mean the end of a long observation process. They are players who correspond to the club’s intentions. They are young and have plenty of potential and talent.”
He added: “It’s an attraction being able to develop their abilities. I have worked with young players many times and their potential is impressive.”