The Uruguayan saw goals from full-back Phil Bardsley and substitute Sebastian Larsson clinch a 2-1 fourth round victory over Southampton at the Stadium of Light to set up another big date on Wearside next month.
It will be the Black Cats' first foray into the last eight in the League Cup since 2000.
Gus Poyet: "I suppose that's good news, yes?
"Look, they are the games I need to enjoy. In quarter-finals, you can't ask for any small team, you know you are going to get one of the big ones.
"It's going to be special for me - an official game against Chelsea is always very special - so I am looking forward to seeing Jose and company.
"Bardsley,. I'm not sure if it was a risk. As soon as I arrived, I saw him train.
"I saw how important he could be for us and the way he was training and wanting to play in friendlies behind closed doors.
"It's not something I analysed too much. He is part of the club, he is under contract and if he is good enough, he will play.
"Of course, it's a cup competition, you need to win. Everybody knows a quarter-final is something we haven't achieved for many, many years, which is great for the football club.
"We are playing Chelsea, which is going to be special here at home.
"But the most important part was how.
"We passed the ball more today than in the last three games together, which is something we need to keep believing in because it has to be the way in the future."