Barcelona have kept Lionel Messi, discarded Luis Suarez and hired Ronald Koeman but the new era begins against Villarreal on Sunday when change must bring results.
A visibly frustrated Messi said after they lost 2-1 to 10-man Osasuna at home that they have been "an erratic and weak team" throughout the season.
The draw meant the Catalans stayed second in the standings on 70 points and leaders Real Madrid, who have 71, will go four points clear at the top with five games left if they beat Getafe at home on Thursday.
Messi was hauled to the ground in the first half by a diving Unai Bustinza wrapping two arms around his waist and he was knocked over again in the second, this time earning a penalty, which he converted.
Ronald Koeman has denied suggestions Lionel Messi is difficult to manage, insisting he has a good relationship with Barcelona’s captain. In an interview published in El Pais on Sunday, former Barca coach Quique Setien said
Mistakes from Gerard Pique and Marc-Andre ter Stegen left the goal gaping but Barca, and a below-par Lionel Messi, failed to respond
If Barcelona have been weighed down by the burden of expectation in recent years in the Champions League, they should feel freer than ever ahead of Saturday’s last 16, second leg against Napoli.
Lionel Messi might never have been faced with a more daunting task at Barcelona than engineering a victory against Bayern Munich in Lisbon on Friday.
Frank de Boer has emerged as the most likely candidate to be named coach of the Netherlands after weeks of speculation over who would succeed Ronald Koeman.