Yes of course. Stating the obvious. Fergie's greatest trait was delegating to his staff and always evolving his teams over time. That included trusting Queiroz to implement a completely new system which coincided with bringing out the best in Ronaldo and Rooney.
It also was one of the reasons why Keane was let go. He did not agree with the tactics nor did he like the fact that Queiroz was given so much power, almost like a manager.
Back to the point. Quieroz was widely recognised as the mastermind behind our tactical success in the mid 2000s.
Which success?
I know Queiroz did a lot of good stuff at United and implemented some changes. SAF himself has praised him for that.
And I know the players have praised him for the way he prepared us against Barca in 2008.
But where was his tactical genius when we failed in the CL in 2002/03, 2004/05, 2005/06 and 2006/07?
I have always felt that the 2008 performance against Barcelona was a combination of good preparation and tactics AND:
1. Team ready to go all the way after CL experience in previous years
2. Great defence and not injured (unlike the previous year vs Milan)
3. Great goalkeeper for the first time since Schmeichel - and by 2006/07 he had a great understanding with the defence
4. Luck when we needed it (Barca score 1 goal / penalty at OT and we would have needed 2 goals)
Don’t get me wrong, Queiroz was very good for us and we did well to get him, but his influence is at the same time a bit overrated here.
In terms of winning the CL: Unless you are RM, if you win 1 CL per decade, it’s actually a very good record. If you win 2, it’s great. Even RM only won 1 in the last decade. Bayern also only won 1 in the last decade and 1 so far this decade.
United won 2 in the last 2 decades, didn’t win it in the current decade. Which also doesn’t surprise me. We usually win it / get far when we are a really good team anyway winning our league as well. Can’t see us doing a Liverpool (2005), Chelsea (2012), RM (1998-2002) or Milan (2007) where we are not in form in the league but still win the CL.
And I feel if City are going to win it - especially under Guardiola - then also when they are doing really well in general. But based on that last year should have been their year.