Chelsea were pressing for goals late on as they looked to haul back the two-goal lead Swansea built up in the first leg at Stamford Bridge, but after a wayward Cesar Azpilicueta pass went out of play, the youngster decided to not release the ball promptly.
HAZARD KICKS BALL BOY
ALL OF GOAL.COM'S CONTENT
HAZARD SENT OFF FOR KICKING BALL BOY
HOW SHOULD BELGIAN STAR BE PUNISHED?
'WHAT A JOKE!' - ALL THE REACTION
HAZARD APOLOGISES TO BALL BOY
Speaking to reporters, Benitez said: "Eden Hazard has been in to see the ball boy and the two have apologised to each other.
"The ball boy knows he was wasting time. We are disappointed to lose the player but we cannot change things. They both recognise there was a mistake.
"The boy was apologising for time wasting. Hazard was frustrated and tried to get the ball. He was kicking the ball and getting the ball.
"We can analyse if for half an hour but we know that both are wrong."
Swansea manager Michael Laudrup believes Hazard will feel foolish once he sees the incident back.
He said: “Well I saw it from a very distance, obviously from the bench, and just saw it after the game and I think Hazard, who is a great player, I think when he sees the images on television I think he will regret it.”
The ball-boy in question has received criticism for what has been deemed a blatant attempt to waste time, but Laudrup was adamant that instructions to delay giving Chelsea the ball back were never issued.
“No, no, definitely not,” he insisted. “I think he was pushed and then he is on top of the ball. But whatever happens, I can understand all frustrations, you know, when you are behind, we all try that. I’ve been a player myself, you have a hundred and eighteen in pulse, but there are things you can never do.”
In a statement made by South Wales Police, it was confirmed that the 22-year-old shall be interviewed about what happened at the Liberty Stadium.
"We are aware of the incident involving a ball boy at the Liberty Stadium,” it read.
"We are making arrangements for him to be interviewed. South Wales Police takes such matters very seriously."