The international break has posed varying worries for Arsenal ahead of their match with West Brom.
Arsenal face West Bromwich Albion this weekend, hoping to kick on in their quest to win the Premier League title.
International breaks have not always been kind to the club in the past, with players picking up injuries, and while there have been no big blows this time around, their task is not without it's challenges.
The duo were part of the French side which took on Germany at the Stade de France on the night of the Paris terror attacks, and put in an understandably lacklustre display against England at Wembley on Tuesday.
Both players admitted they were pre-occupied with the tragedy, with Laurent Koscielny telling L'Equipe: "We tried to clear our heads, playing football, but it's true [Friday's attacks] returned all the time."
Olivier Giroud added: "It was not really us tonight. There were a lot of emotions."
It will not be easy for either player to re-adjust, and while they will get huge support from their teammates, and the staff at Arsenal, there is a quick turnaround time for Saturday's 3pm kick-off at the Hawthorns.
Arsenal need to assess both players to see if they are mentally prepared and going to be able to perform to the best of their ability. With Theo Walcott out injured, it is especially important Giroud is ready.
One player who there will also be concerns about is Alexis Chile, who looked off the pace in the North London Derby.
Despite this he was picked as a starter in both of Chile's international fixtures, playing in an intense World Cup qualifier against Uruguay last night.
With a long flight back from South America, Arsenal need to strongly consider resting Sanchez if it is best for him, but their decision could be influenced by their decision on Olivier Giroud, and vice versa.