Real Madrid 's training session saw Martin Odegaard swing in a cross for Cristiano Ronaldo to score a header ahead of the 16-year-old 's potential debut in the Champions League this week . Odegaard joined Real in January after the La Liga giants won the race to sign the Norwegian starlet , and he has tried to show manager Carlo Ancelotti why he deserves to face Schalke on Tuesday . The Norway international has already scored for Real Madrid 's B team Castilla and reports suggest he could be in line to make the step up to the first team . Martin Odegaard crosses the ball into the box during a Real Madrid training session . Cristiano Ronaldo rises above the rest to head the ball into the back of the net during training . Ronaldo scoes via Odegaard 's cross as Real Madrid work on their set pieces in training . Real 's Champions League last-16 tie sees them carry a healthy 2-0 lead from the Veltins-Arena in Germany to Madrid as they look to defend their crown . And should Odegaard make his debut then he would become the youngest player to play in the Champions League - beating the record of 16 years and 87 days held by former Chelsea and Newcastle man Celestine Babayaro by three days . Yet before that Real have a La Liga match against Athletic Bilbao on Saturday to deal with . Real were held to a 1-1 draw at the Bernabeu by Villarreal in their last match , allowing Barcelona to cut the gap to just two points , and can not afford another slip . Odegaard ( centre ) joined Real in January after the La Liga giants won the race to sign the Norwegian starlet .
Carlo Ancelotti could feature for Real Madrid first team against Schalke . If he does , he will become the youngest ever Champions League player . CLICK HERE for all the latest Real Madrid news .