Carlo Ancelotti is confident Real Madrid will knock Paris Saint-Germain out of the Champions League and says Toni Kroos will only play if he is fully fit.
PSG will start the second leg at Santiago Bernabeu on Wednesday with a 1-0 lead courtesy of Kylian Mbappe's brilliant late winner three weeks ago.
Madrid might be facing a bigger challenge to reach the quarter-finals if Thibaut Courtois had not saved a Lionel Messi penalty at the Parc des Princes.
LaLiga leaders Madrid will be without the suspended Casemiro when they face Mauricio Pochettino's side and fellow midfielder Kroos missed the 4-1 thrashing of Real Sociedad on Saturday due to a hamstring injury.
Kroos has returned to training, but Ancelotti refused to state whether he will play against the Italian's former employers.
"If a player isn't 100 per cent fit he can't play, so we'll have to wait and see," he said.
Los Blancos have won three consecutive games since their defeat in the French capital and Ancelotti believes that run will continue.
The ex-PSG head coach said: "We want to stay alive in this competition. It's massive for us, massive for the club. we don't want to be knocked out of such an important competition.
"Life will go on and hopefully we will still be in competition. I am confident we will qualify, but PSG will also be confident."
Unstoppable Real Madrid
Madrid look unstoppable in their quest to win LaLiga and Ancelotti is hopeful that will not be the only trophy they can get their hands on this season.
"I think we are having a good season, it has been good so far and every time we do something there is always a 'but'," he added.
"If Karim [Benzema] doesn't score [there is] a 'but', there are lots of opinions out there. I think we are having a good season and hopefully these last two months we can end the season on a high."
Benzema says Madrid were hurt by their loss in the French capital but does not expect more pain if Los Blancos play to the best of their ability.
The striker explained: "We are a proud team and that defeat hurt us, but we know that the best Real Madrid can compete with the best PSG. We saw the best PSG in the first leg and hopefully we will see the best Real Madrid on Wednesday."