The newspapers cited the TV report in their own discussions of a potential transfer, but did not confirm the claim that the deal has already been agreed.
At 33 his best days would seem to be behind him, give or take the odd brilliant free-kick, and although Real Madrid have tried to tempt him with a new contract, the Sun says he wants to sample a new club in the twilight of his career.
Apparently, Real Madrid has accepted Juventus' offer too.
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It should be noted that both Ronaldo and Messi would be 37 and 35 respectively when the next World Cup comes around. Uruguay had to withstand fierce late Portugal pressure as the European champions chased an equaliser.
However, as he gets older, Madrid will eventually stop giving him new contracts, and Ronaldo will become the boy who cried United. Marca reported earlier that figure would be €30m a year in Turin.
Ronaldo, having hinted that his future could lie away from the Santiago Bernabeu, transfer talk has built steadily since the 2018 Champions League final. Ronaldo has many personal accolades including five Ballon d'Or awards plus team victories in La Liga, Champions League with Real Madrid and Manchester United and the Euro Cup in 2016 with Portugal but they failed to advance past the Round Of 16 with a loss to Uruguay in the 2018 World Cup in Russian Federation.
A source close to Ronaldo told ESPN in June that he remained determined to leave Real Madrid this summer, though he would only consider a move to England, France or Italy.