Arsenal manager Arsene Wenger has received a clean bill of health following the international break.
The European players have already reported at London Colney ahead of the weekend's trip to Watford and Wenger has revealed that he has received the confirmation from South and Central American players that there is no worrying news on the injury front.
Wenger said: "From the internationals we only have positive news.
"We are still waiting for Joel Campbell, Alexis Sanchez and David Ospina to return, but they all texted back to say they are OK, so we just have to see if they were objective in their assessment."