Arsenal are next in Europa League action with a home clash against Qarabag, a game followed by a trip to Southampton on Sunday.
And according to the Unai Emery, the next 24 hours will decide as to whether the German will be fit and ready for Saturday's 3 o'clock kick-off.
Former Arsenal defender Matthew Upson does not believe the Gunners are title contenders, despite Unai Emery's men returning to winning ways on Saturday by beating Huddersfield Town 1-0 at the Emirates Stadium.
No doubt he will be further assessed by the medical team at London Colney but it will be a big boost if Mustafi hasn't suffered any lasting damage as we lost Rob Holding for the rest of the season last week while Dinos Mavropanos is still out so the last thing we need is another injury in defence.
Koscielny was previiously asked to travel with the squad by new manager Unai Emery for recent matches against Bournemouth and Manchester United, and speaking to reporters after last weekend's win, goalkeeper Leno said: "Of course, it is hard for me to compare before [Koscielny's injury] because I was not here, but in training you see how he is talking to other players".
USA hiring slowed to 155K jobs, trucking gains on seasonally adjusted data
Sales of existing homes have fallen 5.4 percent from a year earlier, the biggest annual decline in more than four years. In this slow housing market, however, further rate increases may not necessarily result in higher mortgage rates.
That leaves Laurent Koscielny, who was on the bench against Huddersfield after seven months out injured, as the north London side's only available centre-back. I feel that we are developing personally, tactically and technically too.
"I believe he's made such an impact, not only is he such a good player, I think he's impacted Granit Xhaka and those around him". You don't play. How is that good for anyone?
Emery did speak about his players' behaviour after the game and insisted that simulation is something he never wants to see - even if it works.
"The first two games [which Arsenal lost to Manchester City and Chelsea], we had envisaged those going better, but to come back in the way we have is awesome". But the flip side of that is they're lacking in match practice so could really do with the run-out on Thursday.
Despite struggling for their usual fluidity and having a first-half goal from Alexandre Lacazette disallowed, Arsenal extended their unbeaten run to 21 matches with Lucas Torreira's 83rd-minute finish.