Chelsea told why Lionel Messi and PSG may be the biggest threat to their Champions League crown

Chelsea have been told that alongside Man City and Liverpool, Paris Saint-Germain and Lionel Messi could indeed end up being their biggest threat to the Champions League crown due to the firepower Mauricio Pochettino has at his disposal.

The Blues aim to kick off their knockout campaign on the right foot when Lille come to town on Tuesday night for the first leg of their Round of 16 tie.

Whilst the two clubs battle it out under the lights at Stamford Bridge, all of Man City, Liverpool and PSG amongst others will be watching keenly to see how the reigning European champions fare against the so-called underdogs in this situation.

All three of the aforementioned trio have taken positive steps towards the quarter-finals of this year's competition with wins against Sporting Lisbon, Inter and Real Madrid respectively.

Unless a miraculous turnaround occurs in Liverpool's and Man City's ties specifically, it is highly likely that both will progress one step closer to the grand piece final.

For PSG and Pochettino, they must ram home the 1-0 victory that Kylian Mbappe gifted to them in the first leg when they once again take on Carlo Ancelotti's side in the second leg of their respective tie at the Santiago Bernabeu next week.

If all three giants were to move on forward in this season's competition coupled with Chelsea's expected progression as reigning champions, four out of the eight teams in the next round will all have their arguments as to why they each should be labelled as favourites to pick up the crown.

However, former Blues star Florent Malouda has now weighed in on the debate as he reckons Lionel Messi and PSG could be one to watch out for Chelsea wise if they were to maintain a certain 'confidence' level that could