Borussia Dortmund chief Michael Zorc concedes they could lose Shinji Kagawa in the summer.

The Japan international has been linked with a move to England, where Manchester United, Liverpool and Arsenal are interested.

"Soon we will reach a decision. We would be delighted to renew with Kagawa, but this depends only on him. He's an important part of our project. However we know of his desire to play in England or Spain," said Zorc.

Kagawa comes off contract in 2013.