Borussia Dortmund coach Niko Kovac knows his side are still a work in progress but sees signs of improvement as they prepare for a tough Champions League Round of 16 first-leg clash at home to Lille on Tuesday.

Borussia Dortmund coach Niko Kovac admitted his side have "a long way to go" despite their recent uptick in form ahead of Tuesday's home Champions League clash with Lille.

Coming off the back of two Bundesliga wins, Borussia Dortmund will aim to keep that winning feeling when they host Ligue 1’s Lille in the last 16 of the Champions League on Tuesday evening. Both

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