Since the memorable 2-1 win away against Atletico, we have had poor results losing to Manchester City and Crystal Palace.
In a way, Ferguson foresaw this demise.
"No-one has said the word impossible but what hurts us the most is that we no longer depend on ourselves", he said. "When he scores goals, the team has a great chance of winning".
The Scot's point is more apt than ever.
'We need to win now, ' he added.
However, after beating another of his ex-clubs in Athletic Bilbao on Saturday, the Barca boss was denied a second successive win over old employers as the La Liga leaders surprisingly drew a blank in Greece.
But their cycle might be up.
Atletico's wobbly form this season has not been limited to Europe's elite competition and they have only won one of their last eight games, conceding far more goals than they used to and appear to be suffering from anxiety when it comes to scoring.
Atletico Madrid's Champions League hopes hang by a thread after they were held to a 1-1 draw at home by Group C minnows Qarabag on Tuesday despite playing a large part of the second half against 10 men.
Atletico have paid a heavy price for a FIFA ban on registering new players until January, meaning club record signing Diego Costa and Vitolo can't feature until the new year.
They went out to Real Madrid in all of three occasions.
The foundations for Simeone's previous success do remain. Only Barcelona and Leganes have conceded fewer goals domestically.
An inevitable settling in period at their new Wanda Metropolitano home is also not helping.
Speaking to the press after the match, Simeone lauded the exploits of the visitor's goalkeeper but implored his charges to recover from the setback.
"I'm honestly 50/50 as to whether that can happen or not, the way Roma played at Stamford Bridge". Edin Dzeko controlled it and was left with three Chelsea defenders for company Rudiger, Luiz and Azpilicueta all closed down the Bosnian forward Somehow all three managed to be fooled by a simple turn...
And that investment now looks questionable with Atletico, at best, set to drop into the Europa League barring an unlikely combination of results. "They're growing and this will help them for the future".