Jaime Alguersuari will not be continuing with DS Virgin in the 2015-16 FIA Formula E season due to medical reasons, the Spaniard has confirmed.
The 25-year-old missed the inaugural season's London ePrix finale, having had his FIA licence suspended due to health issues after he reportedly fainted in the aftermath of the Moscow round.
In a statement on his Facebook page, Alguersuari said: "During the month of July I underwent several tests for which there has not been a medical resolution and I am still waiting for the final diagnosis.
"For this reason I need to announce that, unfortunately, I will not be able to take part in the FIA Formula E Championship for the 2015/16 season with my team DS Virgin Racing."
Alguersuari placed 13th in Formula E's first season, with a best finish of fourth. 2013 GP2 champion Fabio Leimer was his replacement in London.
The official departure of the Spaniard, who has promised to announce his future plans in September, leaves a free seat at DS Virgin alongside the all-but-confirmed Sam Bird.