Manor has confirmed that Alexander Rossi will remain with the team this year as its official reserve driver.
Having spent several years as reserve at the defunct Caterham squad and having occupied the same role at Marussia, Rossi stepped up to a race seat in Singapore last year.
The American driver participated in five of the final seven events, alongside his GP2 duties, but was unable to retain his seat this year as Manor signed Pascal Wehrlein and Rio Haryanto.
Alongside his Manor role, Rossi will compete in the IndyCar Series for Andretti Autosport, which begins in Florida this weekend.
"I’ve invested most of my career in F1 and I’m not one to kick my heels and wait for things to happen, so this is my way of staying sharp and prepared," he said.
"It was disappointing to miss out on a race seat with Manor this year; everyone knows I pushed and worked hard for it.
"As official reserve driver though, I have a very complimentary dual program at the highest level of motorsport.
"It’s great to be back with a team I know and with whom I share a mutual respect and passion for the sport we love."