Germany's Mustafi suffered a thigh muscle injury in the 5-1 World Cup qualifying victory over Azerbaijan on Sunday when he was taken off in the 37th minute after grabbing his right thigh in pain with no opponents near him.
"We lost Mustafi for four to six weeks, I don't think he will be available before the next worldwide break", Wenger told reporters at the pre-game press conference.
Koscielny, on the other hand, skipped the recent worldwide break to recover from an Achilles injury that has been a long-standing issue for the Francedefender.
"I will decide what I have to do when Koscielny has his test tomorrow. It looks like if he survives the test he is capable to play".
Air Berlin says talks with easyJet continue
Lufthansa CEO Carsten Spohr said earlier he expected the European Union to approve the transaction by the end of 2017. Ryanair previously described the negotiations as a "stitch-up" meant to strengthen Lufthansa.
Koscielny has been managing the problem for several seasons and, although he had not joined in full training at the start of the week, the intention is for him to resume with the squad ahead of Saturday. At the moment, he's not available. Sanchez won't be back with us until tomorrow.
Wenger, meanwhile, will make a late decision on the make up of his front three for the game against Marco Silva's men. "He trained on his own and the signs were positive so we will test him on Friday".
Jessica Chambers murder trial
Cole Haley , who was Fire Chief for the Courtland Volunteer Fire Department on December 6, 2014, took the stand next. Prosecutors say Tellis set Chambers and her auto on fire in a rural back road and left her to die.
Is Neville Quitting WWE?
It's being reported that Neville walked out of RAW last night after either asking for his release or quitting outright. PWInsider.com is reporting that according to multiple WWE sources they have spoken with Neville has not departed WWE.
Iran warns U.S. on designating Guards terrorist group
According to him, if any side fails to stand committed to the deal, it would be tarnishing its own reputation. The aide went on to accuse Washington of supporting Islamic State (IS, formerly ISISISIL) terrorists.
NBW issued against Imran Khan
Khan and ex-premier Nawaz Sharif have been at loggerhead for years, especially after the Panama Papers scandal in April last year. The petitioner alleged that Khan received almost $3 million in foreign funds that were collected through two offshore companies.