Jurgen Klopp admits he faces a goalkeeping shortage if Alisson Becker is ruled out for a lengthy period.
His first choice keeper had to leave the pitch with a calf injury after 39 minutes of Liverpool's opening 4-1 win over Norwich on Friday night.
"It's the calf and that's it," the German said as he ruled the Brazilian out of facing Chelsea in the European Super Cup on Wednesday.
"He couldn't carry on, that's not a good sign, and we have to see. Wednesday he will not play. With all my experience I can say that already."
Klopp was full of praise for substitute goalkeeper Adrian:
Adrian, just four days after signing for the club on a free transfer, came on to make his Reds debut as Alisson hobbled off, and the 32-year-old now stands to start against Chelsea in Istanbul.
But whether Klopp is able to select a goalkeeper on the bench remains to be seen with the Reds boss admitting his options are extremely short with the other goalkeeper in the senior squad, Caoimhin Kelleher, recovering from a broken hand.
"Caoimhin is back in training but he's not 100 per cent, we have to see how he reacts now," he said.
"One of the younger ones is not allowed to play, he's only 16, and the other one had an elbow injury early in the pre-season. So yeah, we're a bit short in that position.''