Shinji Kagawa has confirmed that he has reached an agreement with Manchester United.

The Red Devils announced last week that they had an offer accepted by German champions Borussia Dortmund for the Japanese international.

Kagawa refused to discuss the potential transfer at the time, insisting that he was fully focused on Japan's upcoming World Cup qualifiers.

With those matches now completed, the 23-year-old has broken his silence.

"I have to do a medical check but the agreement between me and the club is done," he told Japanese reporters. "I wanted to avoid people focusing on this matter [during World Cup qualifiers]. It was Manchester United who sent me an offer officially."

"They're one of the biggest clubs in the world, and I was given a chance to play for them. I took a lot of things into consideration, like the fact that they've got a deep squad, their style of football and it wasn't an easy decision.

"But I wanted the challenge."

Kagawa will become the first Japanese player to represent Man United.