I think Ronaldo current contract is going to end soon. Cristiano Ronaldo is the player who performed from Al-Nassr for a long time. He enjoyed his journey with Al-Nassr and also made memories over. But now the rumor is Cristiano Ronaldo is again to join Manchester united. Manchester united is a good and capable team. And this seems in Manchester United that the players who left Manchester United do not come back in the same team. But Cristiano Ronaldo's comeback is giving a reason that he has an emotional bond with the team. And He will feel comfortable in this team. Yet, there is no official Announcement about the final decision. But I personally think if Ronaldo's comeback is turned into reality this will be a great decision of the Management for the betterment of the team.
I would say that these discussions are pointless . Ronaldo is still a great player. He was the top scorer of the Saudi proleague last season. He scored 25 goals and 3 assists in 30 matches. Ronaldo had a great season.
But do not forget that Ronaldo age is over 40 now. Maybe Ronaldo's fitness is good. But Ronaldo will not do something stupid like returning to a competitive platform like the Premier League at the age of 40. Also , Manchester united will not be interested in adding a 40-year-old Ronaldo to the squad. First of all, Ronaldo's age is 40+. Secondly , manchester united have to pay high wages to Ronaldo. So I don't see the possibility of Ronaldo returning to Manchester United again.