Undoubtedly the most bizarre moment of Manchester United’s 1-0 victory over Rostov in the Europa League on Thursday night came midway through the second half.

You know what we’re talking about. Jose Mourinho handed an unpeeled banana to substitute Ashley Young, who then passed it to Marcos Rojo. The Argentine defender quickly gobbled it up, to the amusement of just about everyone on social media.

The BT Sport interviewer wouldn’t have been doing his job properly had he not asked Mourinho why he’d given Rojo a banana during the match - it’s not something you see every day, after all - and he didn’t let us down.

It’s impossible for interviewers to tell which version of Jose Mourinho they’re about to talk to once a game’s finished.

Will they get the jovial, humorous version - or will they get the ultra-serious, moody version?

Mourinho's serious/funny explanation of the banana incident

On this occasion, Mourinho didn’t appear to be in a particularly light-hearted mood, despite United’s victory.

And his explanation for the banana incident was delivered with such seriousness that it was genuinely funny.

“Your bench was certainly kept busy this evening,” the BT Sport interviewer said to Mourinho, what happened with the banana?”

The Portuguese coach, obviously slightly perturbed by the question, responded: “I don’t know if you were tired any time in your life.

"I was tired many times. I know about the body needing anything - anything - and the player asked for a banana.

“But it’s not to laugh [at] - it’s not to laugh at all. It’s to respect the players [playing at] their limits. They give absolutely everything.”

Video: Mourinho explains why Rojo ate the banana

Watch Mourinho's explanation by skipping to 3.06 in the video...

Video: The banana incident

For those who haven’t yet seen the banana incident, watch it here…

Mata's strike wins it for United

As for the match itself, well, it wasn’t a classic.

However, United put their name in the hat for Friday’s Europa League quarter-final draw thanks to Juan Mata’s second-half strike.

Paul Pogba suffers hamstring injury

The only negative for the Red Devils was a hamstring injury suffered by record signing Paul Pogba.

According to Sky Sports, the French midfielder is expected to be sidelined for the next three weeks.