Barca must keep in mind the formation that may be used by Bayer Leverkusen. La Blaugrana should also keep in mind which goalkeeper (Rene Adler, Bernd Leno, David Yelldell) may be used.
Barca must remain with Leo Messi and Alexis Sanchez as protagonists. The 4-3-3 position must be left intact since it has produced great results.
Victor Valdes should remain goalkeeper for this match since he obtained good results within the last encounter. The important factor is that Barca should not rest on its laurels but must go forward.
It remains to be seen what will transpire in this match.