Lotus Formula 1 reserve driver Marco Sorensen will make his GP2 debut with MP Motorsport at Silverstone this weekend.
The 23-year-old Dane replaces Tio Ellinas alongside Daniel de Jong at the squad. Ellinas had occupied the seat - in which Jon Lancaster began the year - since Barcelona in May.
Sorensen is competing in Formula Renault 3.5 with Tech 1 this season, and has not previously raced or tested a GP2 car.
"My plan is to get up to speed quickly and get the best results I can for MP Motorsport, but the practice is only 45 minutes and then we have qualifying on the same day," he said.
"For sure it will be difficult, but there isn't a lot of pressure so I'm going to enjoy it - that's when I drive my best."
MP team boss Sander Dorsman said Sorensen's race-winning FR3.5 pedigree and F1 endorsement suggested he could cope with being thrown in at the deep end.
"He's a fantastic young driver and his position as official reserve driver for the Lotus F1 team speaks for itself", said Dorsman.
"Although he is new to GP2, he brings good experience from Formula Renault 3.5 so we're sure he will quickly adapt to the GP2 car and be a force to be reckoned with."