Arsenal's win over Manchester United was followed by Gary Neville and Jamie Carragher in the Sky Sports studio following.
Arsenal's opener after a swerving shot Unai Emery's side the lead.
The Gunners played on the counter and then hit the Red Devils 2-0 with Pierre-Emerick Aubameyang bagging the second from the penalty spot.
After the match Neville explained passionately why De Gea was to blame for the goal, but his co-pundit Carragher saw things a little different, and a fiery debate broke out.
Arsenal in the second just helped to break the deadlock, "explained Neville.
"I do not know why he [Carragher] what's not sure about it, it's gone in the middle of the 30-yard goal. "
At this point, Carragher joins the conversation to defend his point, and says to Neville, "Why, because I have the same opinion as you?"
But the Manchester United legend says: "It's not even a debate." If the ball goes into the center of a goalkeeper's net from 30 yards it's not even a debate. "
Carragher has said: "But it did not take a deflection!"
De Gea to simply make the save: "But it moved that much!"