Barcelona host Paris Saint-Germain in a "winner takes all" final Champions League group game.
PSG need only a draw to progress as group winners but know that to go to Camp Nou with an attitude just to protect what they already have is tantamount to professional suicide.
The French side need to go for the jugular and knock Barca out of their stride early in the game to ensure progression as the first-placed side, thereby potentially giving themselves an easier opponent in the next stage of the competition.
Barca will have something to say about that of course, and a packed Camp Nou will be fully behind their team as they looked to overturn the 3-2 loss at the Parc Des Princes in the second match of this years edition.
Luis Enrique has much to consider ahead of the game.
The Catalans were pretty awful in Paris, two wonderful finishes aside, and defensively they were asked questions throughout that they simply didn't have answers to.
Much was made of the absence of Zlatan Ibrahimovic before the game, but in the end it mattered little.
His inclusion in this one will add some extra spice into a match that has all of the ingredients for a classic.
Barca will no doubt come out of the blocks in much the same way as they did against AC Milan when they had been written off in a previous edition of the competition.
Ter Stegen seeking redemption
Messi, Suarez and Neymar are all finding form just at the right time and the three represent an ominous attacking presence for David Luiz et al to deal with.
Enrique will need his front men on point throughout because there's little doubt that PSG will pepper the Blaugrana with high balls into Ibra. Manna from heaven for the big name, panic stations for Barca's defence.
Marc-Andre ter Stegen has recovered well from his disastrous debut in this reverse fixture, and looks set to continue as the Champions League keeper of choice.
Barca need best players on show
It will be interesting to note if Gerard Pique is given minutes in a game where Enrique needs his best exponents in all positions. With that in mind, the return of Andres Iniesta couldn't have come at a better time.
Lucas Moura will seek to unsettle Jordi Alba once more and it will be down the flanks where PSG are likely to garner the greater success.