The 22-year-old scored twice on Saturday but has joined Franck Ribery on the sidelines with an injury that will keep him out for several weeks
Xherdan Shaqiri has added to Bayern Munich's injury woes ahead of their clash with Arsenal after the winger tore his right quadricep muscle against Freiburg.
The Switzerland international found the net twice as Bayern cruised to a 4-0 win on Saturday, with Dante and Claudio Pizarro joining him on the scoresheet.
However, Shaqiri was withdrawn from the action in the 61st minute and the club has since confirmed a muscle tear.
Despite the injury, the 22-year-old remained in good spirits after the match, saying: "Today we have had fun and are all glad that we won the game."
Shaqiri will join Franck Ribery on the injury table, after his French counterpart underwent surgery, though Bastian Schweinsteiger's return after three months out will be a boost.
Coach Pep Guardiola, who named a weakened team ahead of their trip to London, was full of praise for his players.
"It's always difficult when everyone says you have to win," the Spaniard said. "I am very satisfied. It's incredible how the players concentrate again and again, no matter what.
"This time we have not played great, but respectable. We played well only in the first 15, 20 minutes of the second half.
"The quality of our squad was the difference today."
And goalkeeper Manuel Neuer hoped the performance could inspire another positive display at Arsenal.
"It was a great day for us," he added. "We wanted to deliver a good performance before the Arsenal game. Now we look forward to the Champions League."
The victory is die Roten's 13th in a row in the Bundesliga and stretches their record unbeaten top-flight streak to 46 matches.