Andriy Yarmolenko, the winger of Ukraine's national team and Borussia Dortmund spent the first practice session with his team after the injury that he had sustained in winter.
The 28-year-old has not appeared on the pitch since late January due to the injury.
In November 2017, Yarmolenko was among the top 10 players of German Bundesliga.
The Ukrainian joined the German team in August 2017, leaving his home squad, Dynamo Kyiv, where he was the leader and the captain of the team.
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