Ronaldo was absent from United’s squad for their 4-0 defeat at Liverpool on Tuesday after being granted compassionate leave following the death of his newborn son.
But Ronaldo decided to return to training on Wednesday and United caretaker manager Ralf Rangnick confirmed he was available again for the game at the Emirates Stadium.
Raphael Varane and Scott McTominay also returned to training this week but Edinson Cavani and Luke Shaw remain injured.
“Scott McTominay will be back and fit to play,” Rangnick said Friday. “He trained with us and will train today, so he will be available for tomorrow’s game. The same is true with Rapha Varane and obviously Cristiano is available again.
Pauk Pogba appears to have played his last game for United after scans this week revealed the midfielder is unlikely to play again this season due to the calf injury he suffered at Anfield.
“With Paul, it looks like after the scan we did yesterday or the day before yesterday, it’s very unlikely that he’ll play until the end of the season again,” Rangnick said.
“The doctor told me he would need four weeks, minimum, to recover and, since the last match is at the end of May, I don’t think it is very likely that he will be able to play again.”
Such was the manner of defeat, Ralf Rangnick will surely bring changes to the team that was beaten 4-0 by their biggest rivals.
Marcus Rashford was heavily criticized for his display while youngster Hannibal Mejbri made an impact when he was brought in even despite lapsing the game when he was introduced.
Club captain Harry Maguire received a bomb threat on Thursday.
Manchester United predicted XI: De Gea, Wan-Bissaka, Varane, Lindelof, Dalot, McTominay, Hannibal, Fernandes, Elanga, Ronaldo, Sancho
injured: Pogba, Cavani, Shaw