Alexis Sanchez has scored one goal in 10 appearances since joining United from rivals, Arsenal.

It is obviously not easy for the 29-year-old forward and he had to asked to be excused from his national team’s upcoming games.

He felt there were too many changes happening at the same time.

"The change of club was something that was very abrupt - it was the first time I've changed clubs in January - but many things have happened in my life that are difficult," said the former Udinese and Barcelona player.

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Perhaps their failure to qualify for Russia 2018 affected his drive, but he made a U-turn on the Chile decision after a chat with Manchester City keeper and national team captain, Claudio Bravo.

"As I am self-demanding, I expected something better," he said.

"After my arrival at United, it was hard to change everything very quickly. I even hesitated to come to Sweden...

"I had asked permission to miss these games (Chile also play Denmark on Tuesday) but then I thought better and spoke with Claudio and told him that we should all be united."

Sanchez arrived at United in a straight swap with Armenia midfielder Henrikh Mkhitaryan on 22 January, making his debut in the FA Cup fourth-round win at Yeovil four days later.