Sergi Roberto subbed off on first start back with a quadriceps injury
The player has just been injured but now may be sidelined again
Sergi Roberto made his first start after injury as Barca beat Granada 5-3 in the Copa del Rey, his first since November, but he was taken off early in the second half.
The Spanish midfielder-cum-fullback had a quadriceps injury in his right leg, where he had the problem before.
He was replaced by Sergino Dest, only recently back from injury himself.
Barcelona said they needed to test Roberto before finding out how serious the injury is.
The Catalans visit Real Betis on Sunday night.
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