"We are playing the best team in Europe and some of the best players in the world," said Strachan. "Is it a better team than Busby's? Did they win 10 championships?
"It is not for me to decide if this is the best Manchester United side of all time. That is for those who watch them more often.
"But Rio Ferdinand and Nemanja Vidic could look great no matter who we had up front. Wayne Rooney and Cristiano Ronaldo are terrific - I have no new words to describe them. Their performances speak for themselves.
"But, believe me, it could be a lot worse. We are here now to face United and we are in the Champions League. We could have finished second in the title race and missed out on all this. Let's have a go at it.
"We will try to win that game - that is for sure. Whether we have the full set of weapons we had for Villarreal is another matter, with some big players injured."