Portuguese wonder kid Nani stole the show in the glamour friendly at the Oval last night - and then earned a ticking off from Manchester United assistant boss Carlos Queiroz after the game.
His manager Sir Alex Ferguson has barred Nani from performing his acrobatic somersault after scoring, but the 20-year-old couldn't resist the temptation after his sensational strike in front of the Sky TV cameras.
Queiroz said: "We produced some beautiful moments of football and it was a beautiful goal from Nani but when you celebrate a goal like that, it can be dangerous.
"We hope he has more opportunities to celebrate goals throughout the season but not like that! He can pick up an injury but we will have to work on him."
Queiroz also thanked Glentoran for their warm welcome and said it was an "honour" for United to join the East Belfast club's 125th birthday party.
" We played with the right attitude and it was good to play against a team which caused us some problems," he said.
"The supporters had the opportunity to see some good attacking play and teamwork.
"It was very special night for Glentoran and congratulations to their team and players.
"We are absolutely delighted to have been here."
Nani served up some stunning link-up play with Anderson and Fraizer Campbell and his spectacular 25-yard strike will live in the memories for a long time.
The fans were never going to see all of United's big names but there is no doubt Nani, Anderson, Patrice Evra, Nemanja Vidic, Rio Ferdinand, John O'Shea and Michael Carrick will be key men in the Premiership title race, which gets underway this Sunday.
Derry lad Darron Gibson was also given an opportunity to show Queiroz what he can offer in the second half.
United won the game 3-0 with all the goals served up in the opening 45 minutes by Evra, Nani and Campbell.
"The Premiership is a different world but we are ready to defend out title," added Queiroz.
"Anderson and Nani are settling in well although Anderson is still a little light. I think everybody was happy with the performance and now we are excited about the challenges ahead of us."