United presumably said no to Ronaldo because of the finances involved.
He currently earns a massive £500,000-a-week with Juventus and the Red Devils aren’t willing to shatter their wage structure in order to bring him back.
Furthermore, they’re well-stocked in attack.
For the No 9 role, they have Edinson Cavani, Mason Greenwood and Anthony Martial capable of playing through the middle.
And, out wide, Sancho, Paul Pogba, Marcus Rashford and Amad are all options, too.