Torres, who said he had suffered the worst moments of his career this season at Chelsea, struggled for confidence and goals after his £50 million move from Liverpool in January 2011.
He has picked up in recent months but found himself on the bench for the Champions League final, playing second fiddle to Drogba – not for the first time in his Chelsea career.
Even though the 34-year-old Drogba is expected to leave Stamford Bridge this summer, Torres still saw fit to demand clarification on his role at the club.
Ferrer believes that Drogba was always going to be a problem for the Spain striker.
"His biggest problem is the existence of Drogba," Ferrer said in an online chat with fans on Eurosport Spain’s website. "With Drogba in the team you have to play a certain way to maximise his ability, and that style of play does not permit two central strikers.
"Torres’s problem has been goals, but that is his role – to score from central positions. And when you have a problem like that at a new club it can be very difficult.
"There is a great deal of pressure to score, a pressure he has felt, and when you throw in the fact he has come to a new club, a new city, a new dressing room, you can see how he can struggle.
"But he has been trying to overcome this and, by the end of the season, he regained his touch and confidence and was scoring regularly."
Ferrer pointed out that the Drogba effect – and that of the seasoned veterans who dominated the club – caused problems for Andre Villas-Boas, ultimately costing him his job.
And the former Spain and Barcelona defender feels that, whether Roberto Di Matteo gets the job permanently or not after his cup double, the next Blues manager has to find a way to change Chelsea’s style of play to be less reliant on the Ivorian.
"Di Matteo came in as coach during a difficult season. The objective was to blood younger players, making it a transitional phase.
"This attempted transition resulted in Villas-Boas losing his job, so Di Matteo restored the veterans and steadied the ship.
"But this is not a long-term strategy: a team like this is very capable defensively and mentally, but it lacks creativity and football ability.
"They are utterly dependent on Drogba – and Torres – scoring goals when they get the chance, and have to adjust in the future."