Barcelona beat Sevilla 2-0 in LaLiga Santander last weekend at the Estadio Ramon Sanchez-Pizjuan, a game in which Pedri had to go off and was even seen on crutches as the team headed back to Barcelona. Yet, he could be back in time for Wednesday's fixture.
"There are things that cannot be explained," Koeman said.
"Yesterday afternoon I was surprised. He did individual training and today he had no problems.
"We'll see in tomorrow's training session. I think he can be on the list."