Arsenal boss Arsene Wenger insists Francis Coquelin isn't ready to play at fullback.
Coquelin and Carl Jenkinson are in the frame to cover broken-leg victim Bacary Sagna.
"It's more down to Jenkinson because Coquelin has never been at ease as a right-back player," Wenger said.
"He is not somebody who likes to play at right-back and his confidence is not high when he plays right-back."