Philippe Coutinho could make his Barcelona debut against former club Espanyol in next week's Copa del Rey second leg at the Nou Camp.
Espanyol hold a surprise 1-0 lead from Wednesday's first leg, according to Sky Sports.
The Barcelona boss Ernesto Valverde, however, is hesitant to ink in the 25-year-old's name for Thursday's return fixture.
"I'm reluctant to put an exact date on a start for Coutinho, but the progress of the injury is very positive," Valverde said in quotes published on AS.
"He had a small muscular problem in his quadriceps which is a particularly sensitive zone when striking the ball with power, but I hope he's soon with us.
"Thursday is possible and I hope that today (Sunday) he can train with the rest of the squad."
