Fernando Alonso will undergo medical tests conducted by the FIA on Sunday.
The broadcaster Sky Italia said the Spaniard needs the governing body's green-light in order to return to the cockpit of his McLaren-Honda in Malaysia next weekend.
Almost a month since his mysterious Barcelona testing crash and subsequent hospitalisation, Alonso was back in the driver simulator on Wednesday at McLaren's Woking headquarters.
The British team said he focused on "operational work" whilst practicing "qualifying and race procedures".
"Great day today", Alonso agreed. "Lots of meetings and simulator work," he told his more than 2.2 million followers.