Arsenal fans have had a topsy-turvy start to their week. While Sunday saw them celebrate as the Gunners went atop the Premier League table following a 2-0 victory over Aston Villa, Monday may have brought some grim news.

The Gunners are set to meet defending European champions Barcelona in the round-of-16 of the UEFA Champions League this season, and we all know how the fixture has gone against Arsene Wenger's army over the years. Arsenal have won only one of their seven Champions League games against Barcelona, and that says it all.

This season, the Catalan giants are next to unstoppable, and the Arsenal fans know what they are in for. 

One of the other big games from the draw feature French powerhouses PSG who take on defending English league champions Chelsea. The Blues, under Jose Mourinho, are having a struggling season this time, and getting past the side boasting stars like Edinson Cavani and Zlatan Ibrahimovic, is very tough.

Last season's finalists Juventus will be locked with German giants Bayern Munich in the two-legged matches, while Real Madrid will take on Italian giants AS Roma over two legs in the round-of-16 of the competition.

For the full fixtures, click HERE.

Football fans on twitter have reacted to the #UCLdraw with a plethora of emotions: