Marc-Andre ter Stegen was keen to reinforce a message of hard work on social media on Tuesday afternoon.
The Barcelona goalkeeper addressed the disappointment felt by the club's fans after disappointing results against Paris Saint-Germain and Cadiz.
"No excuses. We keep pushing," Ter Stegen wrote on Twitter, alongside a picture of himself in training.
On Tuesday morning, Ronald Koeman called on his senior players to take a step up as leadership figures within the squad.
"We need the most experienced to take charge," Koeman said in a press conference.
"We have leaders. From the back with [Gerard] Pique, Sergi Roberto, [Jordi] Alba, [Sergio] Busquets, Leo [Messi] up top... there are enough personalities.
"They have to lead the way because they're people with quality and personality. It's important to show the younger players the way."
Source: m.allfootballapp.com