Sporting director of Dortmund Borussia Michael Zork spoke about the seriousness of the injuries of Phillip and Castro.
Dortmund Borussia drew with Bayer in the 14th tour of the German championship, and lost two players.
In the first half, the coach of the "bumblebee" Peter Bos was forced to make two changes - because of injuries left the field Maximilian Philip and Gonzalo Castro.
"Most likely, Philip and Castro dropped out for a long time. The first - a serious knee injury, the second, perhaps, tore a bunch, "- said after the match, Michael Zork.
In the current season of the Bundesliga, Castro played 12 games and was noted by two assistants, Philip scored 6 goals and a successful pass in 11 meetings.