A humbling 3-0 defeat away to Paris Saint-Germain in the opening game and a shock 2-2 draw at home to Club Brugges - having trailed 2-0 - has left Madrid in a precarious situation.
The Spanish side, who fell to their first La Liga defeat of the season on Saturday in a 1-0 loss at promoted Real Mallorca, face a Galatasaray side also with just one point from two games. Defeat for either team in Istanbul could prove a hammer blow to their hopes of reaching the knockout stages.
Ahead of the crunch clash, Real Madrid players and manager Zinedine Zidane took to the training pitch at the TT Ali Samiyen sport complex in Istanbul to go through their paces.
Check out the best pictures from that training session in the photo gallery above. To move on to the next photo, click on the arrows or if using a mobile device simply swipe.