Manchester United suffered their first defeat of pre-season against Atletico Madrid on Saturday, though it was by no means an abject performance.
A late Joao Felix strike and a stoppage time red card for Fred stole the limelight from a largely positive performance. However, the main headline against Rayo Vallecano, regardless of the result, will be the return of Cristiano Ronaldo.
The 37-year-old has been extremely active on social media over the last few days, and used the medium to reveal he would be returning to the pitch for United on Sunday. He still wishes to leave the club, though, albeit Erik ten Hag says the forward still features in his plans.