Since Antoine Greizmann signed for Barcelona, he has not yet found his feet and has not replicated the form he was recognized for in his previous season at Atlético Madrid. He has come under scrutiny and criticism for a larger period of his stay at the club since his arrival, and also hasn't yet cemented his place in the starting eleven.

The Frenchman has been impressive over the years playing for Real Sociedad and Atlético Madrid in the Spanish topflight, hence the reason Barca drooled over his signature until they got it. So far, he has not been able to hit the heights expected of him at CampNou.
The Blaugranawill be heading to the Wanda Metropolitano stadium to take on the Rojiblancos, knowing fully well that a win is their only target, and nothing less. After enduring a stuttering start to this campaign, they currently lie in 8th position and won't be climbing up higher than 5th should they secure all three points come Saturday.
Even on normal days, it is always a difficult task to get a win away at Atlético. And coupled with the fact that they are the only team yet to lose a match in the La Liga this season, it's going to be an even harder task for Barcelona to secure a win.
This game is coming at a perceived right time for Griezmann, considering that it's going to be against his former employers. He now has to grab the opportunity and make the most of it. He should also note that should he be given the nod to take a part in the game, Ronald Koeman will be watching closely and monitoring his contributions.
Should Barca lose the game, they would be condemned further down the table, and will also be a result capable of piling pressure on Koeman, who is also trying to impose his tactics at the club.