Barcelona sports chief Robert Fernandez took a scouting trip to Germany on Sunday.
Accompanied by chief scout Urbano Ortega, Robert was present for Bayer Leverkusen's clash with Wolfsburg.
Four players, it is claimed, were on Robert's radar for the day.
Bayer quarter Wendell, Jonathan Tah, Leon Bailey and Julian Brandt were all consideration for Robert.
The match at the BayArena finished 2-2.