According to Marca, Federico Valverde and Aurelien Tchouameni were involved in a heated row during a recent training session. The pair allegedly traded insults and pushed each other before the dispute spilled into the dressing room, where fists nearly flew.
This altercation echoes a previous row between Antonio Rüdiger and Alvaro Carreras that had recently surfaced, although SPOX later dismissed claims that the German centre-back had slapped the left-back.
According to The Athletic, Mbappé has also clashed with a member of staff, while L'Equipe claims growing numbers of players are fed up with the 27-year-old's behaviour and perks.
With the team on course for a second straight trophy-less season—FC Barcelona could wrap up the league title on Sunday in El Clásico—Arbeloa is already set to leave the club. He had replaced Xabi Alonso only at the start of the year. President Florentino Pérez is said to favour Jose Mourinho as the next coach, while Toni Kroos has been linked with a return in an administrative role.