There’s been claims United would be willing to sell Ronaldo for €15m.
However, the Daily Mail says United chiefs are insisting they will not sell the veteran striker.
The final decision will lie with Ronaldo, leaving the door open for him to change his mind and stay at Old Trafford.
Sky Sport has been told Ronaldo’s agent, Jorge Mendes, has spent the past few weeks selling the ‘Cristiano effect’ to clubs having compiled a dossier of his client’s immense sponsorship, social media and ‘new markets’ influence.
Chelsea co-owner Todd Boehly was among the executives to listen to the pitch and is considering a move, with the Blues having also discussed a move for Paris Saint-Germain forward Neymar.
Ronaldo’s absence comes amid informing United he wants to leave Old Trafford this summer if a suitable offer arrives.
Ronaldo was due to re-join his team-mates on Monday, but has instead been keeping fit at Portugal’s training base – Cidade do Futebol – for the past few days.
Former Manchester United defender Gary Neville believes Ronaldo’s United future cannot become a “saga” this summer.