UEFA Champions League analysis: Arsenal vs PSG - Five key battles and score prediction

Arsenal welcome PSG to the Emirates Stadium on Tuesday night in the UEFA Champions League semi-final.

The Gunners will be looking to advance to their first Champions League final in almost 20 years, with their last coming in 2006 against Barcelona - a 2-1 defeat in Paris.

Here, Sports News Blitz writer Tom Nichols takes a look at five battles which will prove decisive in the match.