Serge Gnabry and Robert Lewandowski had to be substituted with injuries in FC Bayern’s Bundesliga match against RB Leipzig (4-1) on Saturday. “Serge has problems in his back, back pain, so we had to take him off. I can’t give a prognosis for Tuesday yet. The doc has already treated him extensively, we have to see in the next few days,” Julian Nagelsmann said after the final whistle. “Lewy has a bit of trouble in his groin. His substitution was precautionary,” the Bayern head coach added.