Ordinarily, £131m for a player aged 33 would seem insane, but given Ronaldo's huge marketing value and the fact he's still one of the best players on the planet, it would still be an excellent deal for United if these reports were accurate.
Led by Ronaldo as Portugal were sent off to the World Cup at a Lisbon reception held by president Marcelo Rebelo De Sousa Wednesday, the five-time Ballon d'Or victor said: "What I can guarantee is a great ambition of all of us players and technical team".
Ronaldo is said to have suggested this following last month's Champions League final which his team Real Madrid won.
Having been given some extra time off following Real Madrid's Champions League final victory over Liverpool, Ronaldo made his 150th worldwide appearance for Portugal.
"All of the players want Ronaldo to stay at Real Madrid, but one thing is not related to the other".
The left-back also talked about whether Neymar can be Ronaldo's successor.
"He showed a lot of confidence in me and we had a good relationship".
Mohamed Salah can build on his fantastic debut campaign at Liverpool to match superstars Cristiano Ronaldo and Lionel Messi, according to teammate Andy Robertson. But I've got no doubt Salah can build on it and do it over a period of time.