Champions League preview: Liverpool and Arsenal key battles

Liverpool face a must-win game against Debrecen in Budapest on Tuesday as they look to keep alive their slim hopes of Champions League progression.

Click here or click the image to launch our guide.

Meanwhile Arsenal need just a draw against Standard Liege at the Emirates Stadium to book their place in the last 16.

Here we take a look at the key battles and where Tuesday's games could be won and lost.