Fabio Da Silva spent six years at Old Trafford, along with his twin brother Rafael, making a total of 56 appearances under Sir Alex Ferguson.
During his time, he won the Premier League in 2010/11 and faced Lionel Messi in the Champions League final in 2011 at the age of 19.
And at United, Fabio played alongside Ronaldo on the left flank and the Brazilian has revealed some details about the forward that shows the kind of person he really was.
He told ESPN FC: ”Some people were incredibly kind to us [Fabio and Rafael], like Darren Fletcher. He helped us a lot, and we’re still friends.
“Rio Ferdinand and Cristiano [Ronaldo], who spoke Portuguese, were a big help. We didn’t know a single word of English.
“I’ve heard Cristiano called selfish, but he gave us nonstop advice on and off the pitch.
“When I made my debut against Tottenham, I played alongside him.
“Cristiano told me not to take risks in our half because he might not be able to get back to help me. ‘But when you get in the opponents’ half, you can do whatever you like,’ he said.
“With Cristiano supporting me, I felt so positive. And that debut game came after being out for six months with a shoulder injury, but I picked up another injury in that game.”
Another star that helped the Da Silva brothers settle in was Anderson, another Portuguese-speaking player at United.
And Fabio went on to say that the former Porto midfielder was a big help to them and that they are still in contact.
“Anderson was another friend. Cristiano and Fletch were older, more serious. Anderson was more my age.
“We’d go to a Brazilian restaurant with Anderson and he offered to teach us English for free, which was nice of him, but his own English was not the best. He did teach us lots of swear words in English.
“Everyone loved Anderson; he has the biggest heart.
“Even now we have a group chat of former players and Anderson is in there, still writing in English and still using words only he understands.”