Mendes jetted into the UK to address Ronaldo’s fears his dream return to Old Trafford is in danger of ending in disaster.
Cristiano Ronaldo has held crisis talks with his agent amid Man Utd's tricky season.
Ronaldo has bagged 14 of United’s 29 goals in all competitions this season.
But it is understood the Portuguese superstar is frustrated by how Man Utd are performing.
The ex-Real Madrid star is also disillusioned with interim manager Ralf Rangnick's tactics and style of football.
A source close to Ronaldo revealed: “Cristiano is very concerned about what is happening at United.
“The team is receiving a lot of criticism and he knows he is regarded as one of the leaders.
“There are quite a lot of problems and Cristiano is feeling the pressure and is very stressed by the situation.
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