Borussia Dortmund fans protested against high ticket prices by throwing tennis balls onto the pitch on Tuesday.
Jose Mourinho watched on as Borussia Dortmund failed to close the gap on Bayern with a goalless draw at Hertha Berlin.
Crystal Palace are bottom of the Europe-wide form table - and only one Premier League team makes the top 10.
Adnan Januzaj failed to detach himself from Manchester United during his spell in Germany, says Dortmund boss Thomas Tuchel.
Pierre-Emerick Aubameyang struck twice late on as Borussia Dortmund beat Ingolstadt 2-0 on Saturday.
Borussia Dortmund closed the gap on Bayern Munich back to eight points as they won 3-1 at Borussia Monchengladbach.
Sky Bet Football League
29th May 2016