Neymar
Rather than spend £80m on Ronaldo, Man United would be able to continue their youth movement with 23-year-old Neymar, who is five years younger than both Luis Suarez and Lionel Messi yet is already just as skilled with the ball.
Neymar’s transfer would definitely require the Red Devils to shatter the transfer record, but they would have at least five to ten years of production from Neymar and Anthony Martial in their respective athletic primes.