However, the Gunners must do without the German defender Mustafi, who suffered a hamstring injury while on worldwide duty and will be out of action for six weeks.
Wenger said: "I have concerns about my defence because of the injuries, and I need to think about that".
Meanwhile, Laurent Koscielny and Danny Welbeck are also at risk of missing the game due to injuries.
GETTYArsene Wenger's Arsenal take on Watford on Saturday afternoon (5.30pm) Kolasinac is a minor problem, a hip problem. He trained on his own and the first signs are positive.
"Koscielny has a definite final test tomorrow", Wenger added.
Nevertheless, Arsene Wenger is ready to call upon the Frenchman for this weekend's visit to Watford with Mustafi certain to miss out. For Arsenal, they face a tricky trip to Watford to face a deceptively risky side who are well-drilled, industrious, and fit under the tutelage of Marco Silva.
'He didn't play in their first game and we lost him in the second - we have to cope with that now'.
"I will decide what I have to do when Koscielny has his test tomorrow".
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.
Alexis Sanchez will be assessed when he returns from worldwide duty after he received "special treatment" following Chile's 3-0 defeat to Brazil.
Wenger said: "We will assess Sanchez when he comes back, I watched the Brazil game and he got some special treatment in that game".