Gabriel's own goal was enough to give the Saints victory and Arsenal's defeat means they bow out of the FA Cup at the fourth round stage, having won the competition last season.
Willian started the game and he's yet to hit his stride for the Gunners after joining from Chelsea in the summer.
Troopz, who now works for Barstool Sports, was so furious with the Brazilian's showing that he said he was "playing against" Arsenal.
He begins: "On my mum's life, he [Willian] is playing against us! On my nan's grave he is playing against us!
"I swear to God on my nan's grave bro, he's playing against us."
Troopz then removes his headset in anger and continues: "Look at this pussy! Di**head! You f**king d**khead! I hate you, I hate you. I f**king hate you.
"I've never hated a player more in my life than you blud. I never wanted you. I knew you were s**t."
Willian has produced just two shots on target in his 20 appearances in all competitions for Arsenal this season. pic.twitter.com/xHJcA1qQaf- Squawka Football (@Squawka) January 23, 2021
The 32-year-old hasn't registered a goal or assist since November.
A co-host can be heard laughing in the background and Troopz snaps back: "It's not funny blud! This ain't f**king funny! Three years of this s**t!
"Back the process, back the bloodclart ya motha. F**king Willian..."
Fans have reacted to the rant and it could already take the crown as best of 2021.
I fully understand what he's going through. This was me for as long as i can remember :sob::sob::sob: https://t.co/HKTNjHx7lb- Moories (@_Hass3n) January 23, 2021
This is literally me on my couch watching #12 play, thought I was listening to myself for second. https://t.co/6cNs3B7VIY- Luca :flag_ie: (@xLucaGG) January 23, 2021
Troopz blood is really boiling.:joy::joy: Willian FR. https://t.co/0sA504x6p9- Litt Michael Okoba (@okoba_litt) January 23, 2021
Willian is one game away from giving Troopz a heart attackpic.twitter.com/5SJICGCceZ- Boombuzz Kenya (@BoombuzzKE) January 23, 2021
Southampton will now face Wolverhampton Wanderers in the fifth round next month.
Featured Image Credit: Barstool Sports
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