Arsenal boss Mikel Arteta admits he will have to wait and see if Martin Odegaard will face Slavia Prague.
Odegaard played in the 3-0 loss to Liverpool on Saturday, despite injuring his ankle playing for Norway the week prior.
"Again, we will assess today how he's feeling," Arteta told a pre-match press conference ahead of Thursday's Europa League quarter-final first leg at the Emirates.
"He's been carrying an injury for the last two or three days since he got injured with the national team.
"We have a few of them from the last game when we played Liverpool, so today will be the day where we see where everybody is at, and look at who is available tomorrow."
The Real Madrid loanee has been brilliant for Arsenal since moving to north London in January.
