#3 Antoine Griezmann (Barcelona)
Antoine Griezmann is currently enjoying his best run of form in a Barcelona shirt; the Frenchman could be keen to continue his purple patch in continental competitions.
The France international provided two assists in the game against Alaves last weekend, although he was unlucky not to have got on the scoresheet himself.
Griezmann's improved finishing in recent weeks is a testament to his higher level of confidence in himself. The 29-year-old man possesses big-game pedigree, having led the line effectively for his previous club Atletico Madrid.
It is in games like these Barcelona would want Griezmann to make a mark. Considering his current form, the former Real Sociedad man could prove to be the difference-maker against PSG.
#2 Kylian Mbappe (PSG)
Kylian Mbappe has had a relatively underwhelming campaign this term, going by his usual staggering standards. Nevertheless, the Frenchman has contributed 18 goals and nine assists from 28 games in all competitions.
He had earlier gone nine games without a goal in the UEFA Champions League before breaking his drought in the final group game against Istanbul Basakseshir. That strike saw him become the youngest player to score 20 goals in the competition, surpassing the previous mark set by Lionel Messi.
Neymar's absence through injury places extra responsibility on Mbappe's shoulders. But the France international is more than able to carry of carrying PSG's offensive burden on his shoulders.
His pace, change of pace, close control and finishing ability underlines him as the biggest threat to a fragile Barcelona defence.
#1 Lionel Messi (Barcelona)
Big games require big names to step up, and as far as big names go, there is none more significant than Lionel Messi.
The Rosario native's reputation as a bonafide game-changer is beyond doubt, and he is coming into this game on the back of a five-star performance against Alaves.
Messi's displays on the continent in recent years have left a lot to be desired. However, the Argentine still retains a burning desire to end Barcelona's six-year Champions League drought.
Apart from his unmistakable goalscoring ability, the 33-year-old also possesses a knack for dropping deep to influence proceedings.
If Barcelona are to successfully navigate their way around PSG and progress to their quarter-final, they will need their inspirational captain at his mercurial best