Borussia Dortmund chiefs are convinced they can buy outright Chelsea striker Michy Batshuayi.

Batshuayi is on-loan at BVB to the end of the season, without the option to buy outright.

However, BVB chief Hans-Joachim Watzke insists everything is open.

"There is always a chance," he told Sky Deutschland, though admits Batshuayi's impressive form could work against them.

"If he scores in every game, it will be difficult."