The Spaniard will have to battle against Jonathan David, who manager Unai Emery has labeled a dangerman for Lille.
On David, Torres stated: "He is the most important player of Lille. He has power, he has speed. He is a really good player, but we need to keep focused in every player they have.
I like the center-back Yoro. He's a very good young player. We need to keep working as a team and control as much as we can their players."
On whether he prefers to finish in the top four of the Premier League or win this competition, he added: "For me both competitions are so, so important.
After 26 years we have a quarter-final at home. We want to play all the game in front of them. It means that we will be in the semi-final. We are working on it. I think this month and a half is the most important and we need every player to be focused on it."