Zlatan Ibrahimovic's time at Manchester United came to a disappointing end.

The Swedish international managed 28 goals in 46 games in his first season at the club before he suffered a serious knee injury in April 2017.

It was expected that the injury would keep him out until the start of 2018.

Ibrahimovic would return to first team action well before schedule, appearing for his side against Newcastle in the same year.

However, it was clear that Ibrahimovic was not the same player.

He would go on to make seven appearances in the 2017/18 campaign.

The former Paris Saint-Germain striker scored just once in that timeframe; a free-kick in a 2–1 loss against Bristol City in the quarter-final of the EFL Cup.

Ibrahimovic would eventually leave Man United to join LA Galaxy in March 2018.

The 37-year-old has reflected on the final days of his Man United career in his new book 'I am football'.

And it makes for very sad reading.

Ibrahimovic recalls that he was optimistic that he would continue to be a success at the club after returning from his injury.

"When we decided to spend another year in United, I thought I would not disappoint," his book reads, per the Mirror.

"Everything looked good with my knee and it did not seem like I would need as much rehab as we first thought."

But, after returning to action, Ibrahimovic realised he was no longer the player he used to be.

And when Mourinho told him he would be playing one afternoon, Ibrahimovic did not have full confidence in his ability to warrant Mourinho's decision.

"If you want me to play, I'm playing, but I do not want to disappoint you," Ibrahimovic told Mourinho.

"I cannot give you what I can usually give you."

That's very sad. And also very unlike Ibrahimovic, too.

The Swedish international is undoubtedly one of the most confident players in world football.

He always gives off the impression that he thinks he could do anything.

For him to reveal these words to Mourinho are surprising when you take into account just how much faith he has in his ability.

Ibrahimovic's Man United career did not end how he wanted it to, but he has since enjoyed success in the United States.

In his first season with LA Galaxy he finished with 22 goals in 27 games as his side narrowly missed out on a playoff berth.