The Madrid captain has been sidelined since the last month after suffering an injury setback while on international duty with Spain. But ahead of what is a huge week for the defending LaLiga champions, Zidane has received a huge boost with his side needing a big result to turn the tables on the Blues at Stamford Bridge next Wednesday.
"[Ramos] is training with us and that means he's able to play too," Zidane told reporters on Friday ahead of Madrid's Liga clash at home to Osasuna before adding, "We'll see what we do when we name the squad, but Sergio is fit and ready to play."
However, the weekend's game comes too soon for the 35-year-old, who has been left out of the squad as he continues to work his way back to fitness.
Madrid are currently second on the league table, two behind leaders Atletico with five games remaining.
Speaking about the title race, Zidane concluded, "La Liga is always such a tough competition and it'll be that way until the end. We want to win this league title, we know it'll be difficult but we're going to give everything to do so until the end of the season. There's obviously been a lot of games, players have had problems, but in a season all sorts of things happen. The important thing is that we're ready to go out there and compete."