City remain five points behind leaders Arsenal in the Premier League table but boast a six-game win streak in all competitions as they head into the Forest clash on Wednesday night.
A win is imperative to keep Guardiola’s title hopes alive, as anything less would mean Arsenal extend their lead at the top if they can pick up a result against Brighton later this week.
Is Haaland available?
Guardiola first spoke on Erling Haaland's availability in what has been the biggest story heading into the clash, especially for fantasy football players.
"He feels much better, but yesterday we didn't train. Today, we are so we will decide after that."
"We will do the same for Nico (O'Reilly) after the training."
Clubs must adapt to Arsenal's corner exploits
Arsenal have dominated with set pieces this season, exploiting corners in particular to win games. Liverpool boss Arne Slot found success with them against West Ham, scoring three in the first half.
The Dutchman said his “football heart doesn’t like it” and that corners “are not a joy to watch”. Guardiola was asked about set pieces and admits teams must adapt or die.
"Set-pieces have started to be important. It was different when I started as a manager," he said.
"When I was a young boy, we said the people in England celebrate corners and free-kicks like a goal. I remember perfectly, so nothing has changed in that way.
"Arsenal dictate how they do it, and it is an important aspect. Four years ago in the NBA, the three-shot point was not involved as much, but now so many teams do it. It is part of the dynamics.
"You can sit and complain, but you have to adapt. It's part of the game. You have to adapt, especially in the way it is conducted in the Premier League. Every country has a specific way to do it, and every club have specific ways they play. I understand completely why (Arne Slot's comments) and in some ways I agree."
Since November's Champions League loss to Bayer Leverkusen, City have avoided defeat in each of their last 13 fixtures at the Etihad and will aim for another three points against a Forest side who are edging towards relegation.