Pierre Emerick-Aubameyang has seen his role as club captain stripped from him this week after his latest disciplinary breach and has not featured for Arsenal.
Sanchez has struggled for minutes with the Nerazzuri in recent weeks, and reports in Spain suggest he could be set for a return to Spain in a complex swap deal.
Arteta who is the manager of Premier League giants Arsenal has explained that Gabonese striker Aubameyang will not be among his squad against Leeds United.
Mikel Arteta has refused to say whether Pierre-Emerick Aubameyang will be eligible for Arsenal's next match as the striker's exile continues at the Emirates.
Chelsea boss Thomas Tuchel has said he does not believe Arsenal's decision to axe Pierre-Emerick Aubameyang as captain is reflective of the striker's character.
Arsenal sneaked into the top four after a comprehensive performance saw them beat West Ham 2-0 to replace David Moyes’ side in the Champions League places.