Former Atletico Madrid captain Torres will be making his debut in the competition and Benitez said: "The chance to show his talents in the Champions League was one of the reasons why Torres decided to come to a top side. He wanted to play in Europe at the highest level.
"Mentally, he is ready for this challenge. When you can play as well as he has done in the Premier League then you can play in Europe, no problems.
"He is only young, 23, but his problem was that he was in the Atletico Madrid team from the age of 17 and was waiting, waiting for them to get into the Champions League. Now he has the opportunity to show what he can do at this level."