But it's not about learning how to beat a team, Chelsea couldn't show good performance during all this season and Potter disappointed the fans but still, they just surprised us after they won the game against Dortmund, that's the reason to say there can be the same possibly for the match between Real Madrid and Chelsea where Real Madrid have much more hope in the champions league and La Liga and I think they will change the plan they had against Barcelona and use new tactics for Chelsea.
I don't think Chelsea have a lot of chances against Real Madrid, even if they play well in defense and there is a draw in London, Real will not miss the opportunity to beat Chelsea in Madrid. Chelsea have a small chance if they play well in defence, which they do well, and will be able to take chances in the counter attack, but I think that these chances will be few and everyone will need to be treated very carefully.