Sir Alex Ferguson's right-hand man, at Old Trafford for all but one of the last six years, Queiroz has agreed a four-year contract with the Portuguese Football Federation to succeed new Chelsea boss Luiz Felipe Scolari.
Ferguson's former No.2 will be taking Ronaldo under his wing once more - at international level and the 23-year-old believes he is the right man for the job.
"I have been working with him for some time and I just have to say that he is very good for this job," he told RTP.