Borussia Dortmund 'identify Chelsea man as top summer target'
![Borussia Dortmund 'identify Chelsea man as top summer target'](https://sm.imgix.net/24/19/edin-terzic.jpg)
Borussia Dortmund are reportedly prioritising a deal to sign Chelsea loanee Ian Maatsen on a permanent transfer this summer.
Borussia Dortmund are reportedly prioritising a deal to sign Chelsea loanee Ian Maatsen on a permanent transfer this summer.