One thing is for sure, Roberto Mancini seems to have a blind spot for the UEFA Champions League.
The first place to start regarding the Champions League, and Mancini is with Inter Milan.
This was at a time when the Nerazzurri were the dominant side in Serie A. Mancini took over in August 2004-05 and won his first title in 2005-06.
It was the first title of many, as Inter won Serie A every season between 2006 and 2010, with Mancini claiming the title in an almost unprecedented three in a row between 2006, 2007 and 2008 before he was sacked in 2009.
During the Mancini era, Inter were one of the highest spending teams in Europe and, as shown already, were blowing the domestic competition away.
Despite this success and domination at home, Inter, under Mancini, could not make the breakthrough in Europe.
In Mancini's first foray in Europe, Inter were knocked out at the quarterfinal stage by AC Milan after the tie had to be abandoned.
The following season Inter fell to Villareal at the same stage when they were expected to beat the Spanish minnows on the way to the title.
2007 saw another exit at Spanish hands as Valencia triumphed over Inter at the last-16 stage. It was another controversial Champions League exit for the Italian champions as the game finished with a mass brawl between the two sides.
In Mancini's last season at Inter, he saw his side, once again, knocked out in the last 16, this time by Liverpool.
This result eventually led to the Italian being sacked and replaced by Jose Mourinho.
Needless to say, the Portuguese won the Champions League with Inter in his second season.
Now at Manchester City, Mancini has, once again, failed in the Champions League so far.
Having spent almost £300 million on players in such a short time, the City coach should easily have assembled a side capable of challenging for the trophy with big ears.
Last season, they were embarrassingly eliminated from the competition at the group stage, and this season, it looks as if history will repeat itself unless results go their way.
In the Premier League, City, in general, have been excellent. Last season, in particular, they played with great panache, style and a beautiful sense of adventure that is associated with all top sides.
The same cannot be said about their foray in Europe.
The argument against City's involvement in Europe is that it takes time to build the necessary experience and that they will continue to go out until enough has been built.
This, I'm afraid, is pure rubbish.
Football is football regardless of where it is played, and as always, it boils down to 11 honest men in a shape against another 11 men.
The experience argument might be viable when reaching the further stages where experience of pressurised situations comes into play, but in between, it is still a game of football.
The Citizens, admittedly, have found they have been drawn in the toughest groups both this season and last. But, this does not protect them from their performances.
Last year, they drew Napoli, eventual runners-up Bayern Munich and Villareal.
Villareal were in a state of complete turmoil and were roundly turned over in each and every game in the group. While Napoli, also debutantes in the Champions League, played with the kind of abandon we would normally associate with City. Bayern Munich, for their part, were worthy finalists, but they are not the kind of team to strike fear into team like City.
In the group stages, City were poor despite finishing on 10 points.
They only took one point from two games against Napoli, who outplayed them each time and beat an experimental Bayern team on the last fixture date to gain the 10 points.
This season, City have drawn another tough group in Real Madrid, Ajax and Borussia Dortmund.
Madrid are Madrid and were always going to be a tough nut to crack, but the manner in which City approached both the Ajax and Dortmund fixtures, so far, is less than encouraging.
The trend is there for all to see across five different seasons.
Roberto Mancini, in some way shape or form, changes his approach to the Champions League.
Unless he can pinpoint this flaw in his coaching style, City will continue to fail, and Jose Mourinho might just replace him again.