Borussia Dortmund were more forgiving of the defender's decision to join Bayern Munich than many of the club's fans.
Vidal a vital force for Bayern, German keeper on Liverpool radar and Oasis provide boost for Werder Bremen.
In the absence of leading striker Alex Meier, Eintracht Frankfurt look destined for relegation.
Stalemate for Dortmund and Bayern, but there was plenty to admire in the top of the table clash.
Bayern Munich travel to second-placed Borussia Dortmund at the weekend, with the title race now back on.
As relegation threatens, the cracks are starting to appear for Werder Bremen.
The stubbornness of Roger Schmidt could result in a lengthy ban for the Leverkusen coach.
Much travelled Dutch coach advised to step down for medical reasons.
Peterjon Creswell takes you on a tour of Bayer Leverkusen's BayArena, which on Saturday plays host to Bundesliga leaders Bayern Munich.
Few clubs were prepared to spend money in the January window.