I checked the odds on Stake.com and it’s 3.15 odds for Real Madrid and 3.25 odds for a draw. These odds are crazy, looks like Stake are giving bettors a blank cheque. The odds do not match the reality on ground, despite Real Madrid’s poor performance in their last game they are still a strong force to contend with especially in the champions league and Arsenal will need to be at their best performance if they hope to defeat Real Madrid or get an advantage in their first left tie.
Real Madrid's odds is moving up. It's because it has a very shaky defense, yet they're also losing in their last game against a bottom team in La Liga. They also played away game, which is obviously affect their morale a bit.
Their odds is moving up from 3.05 to the 3.15. It clearly says about how bookies are doubting them to secure good aggregate in this away game. However, i personally won't take it.
In this game, i believe they will score, but it's obvious their rival is about to score as well. So, i think BTTS is the right choice to bet. The odds received by them and their rival give me confident they will score with possibly draw.