Keown threatened Humphrey after he joked about the former Gunners star’s comment during the break.
The 52-year-old mentioned it was only half-time, as Arsenal held a 2-0 lead at the Emirates and before he could continue talking, Humphrey sarcastically interrupted him, which in turn saw a brutal reaction from Keown.
The former England international began by saying: “”It’s very obviously only half-time in the tie…”
To which Humphrey said: “Great observation, Martin.”
Keown, who was clearly irritated by the comment, didn’t hold back expressing how he felt about the interruption and said: “You trying to put me away, Jake? I’ll put you away.”
Although Keown was not serious carrying out the threat as he continued to talk with Humphrey and John Hartson without any further issues for the remainder of the broadcast.
The second half didn’t see any further goals and Arsenal will now take a two goal lead into their Europa League quarter-final second leg in Naples next week.
Arsenal’s opening goal came from Aaron Ramsey after 14 minutes.
The Welshman scored from a move he instigated, when he intercepted the ball and then several passes later finished off the sequence by planting his shot into the bottom corner of the net.
The Gunners’ second was ruled to be a Kalidou Koulibaly own goal, when he deflected a shot from Lucas Torreira.
The deflected shot wrong footed Napoli’s goalkeeper Alex Meret and gave him no chance of reacting in time.
Arsenal boss Unai Emery felt his side deserved to win the game, but admitted the tie is far from being over.
“The first leg was very important to take a good result,” he said.
“We deserved to win, but we know it is going to be very difficult there.
“Their performances at home are usually very strong. We will plan to win the match, but we need to have a lot of respect for them.
“It is still 50-50. Our challenge is to be competitive away. Sometimes away we lose the spirit we have at home.”
It was a sentiment that Keown agreed with as he felt the Gunners played well against a Napoli side who are comfortably sitting in second place in Serie A, but is concerned about how the away leg will fair.
“It has been a good performance tonight from Arsenal with two goals,” Keown said.
“You just worry with their away form being so bad, are these two goals enough to go to Napoli?
“We’ll have to wait and see.”