Berlin - Jerome Boateng says Bayern Munich must improve for Wednesday's Champions League semi-final, first-leg, at Barcelona or not bother travelling to Spain following their "careless" German Cup exit.
Bayern's dreams of repeating their 2013 treble of European, league and cup titles this season were ended when they were knocked out of the German Cup semi-finals on Tuesday by Borussia Dortmund on penalties.
The defeat came just two days after winning the Bundesliga title.