Barcelona captain Andres Iniesta missed training due to injury ahead of Saturday's derby showdown with Espanyol.
Luis Enrique's men face their neighbours at Estadi Cornella-El Prat but could be without Iniesta after the 32-year-old sat out Friday's session with a right adductor problem.
Teenage midfielder Carles Alena trained with the first-team in Iniesta's absence.
Barcelona returned to the top of LaLiga by virtue of a superior head-to-head record over Real Madrid following last weekend's dramatic 3-2 Clasico win at the Santiago Bernabeu.
The reigning champions preserved their position at the summit by thrashing bottom side Osasuna 7-1 in midweek.
Iniesta sat out that rout as an unused substitute, while Alena replaced Lionel Messi for the final half hour.
Madrid later responded with a 6-2 triumph at Deportivo La Coruna and retain a game in hand on their rivals.