When is it? How can you watch it? What are the starting line-ups? All you need to know about the UEFA Women's Champions League semi-final first leg between Barcelona and Chelsea.

Under a young new coach in his first ever season taking the reigns of a professional team, Barcelona are still the best team in the world. Their playing style hasn’t changed much from their three years being trained by Jonatan Giráldez, and their on-pitch results are largely the same.

The UEFA Women's Champions League semifinal round will kick off on Saturday with the final four clubs representing three different countries. Arsenal will face Lyon, while current title holders Barcelona will host Chelsea on Sunday.