Arsenal manager Mikel Arteta has said Kieran Tierney is more likely to face Benfica than Thomas Partey.
Both players have been making their way back from injury.
And speaking after Sunday's 4-2 win over Leeds United, Arteta revealed Tierney was the most likely to be ready for the Europa League clash with Benfica this week.
"It seems unlucky at the moment but if there is probably one player who has the bigger chance [to play] it's Kieran," Arteta said.
"Probably in the next few days he can start to do some parts with the team but I don't know how it's going to evolve until he gets a little bit closer to training with the group."