Sauber has confirmed that Formula 2 title leader Charles Leclerc will carry out practice runs at four Grands Prix across the remainder of the 2017 season.
Ferrari-backed Leclerc will pilot the C36-Ferrari during the opening 90-minute practice sessions in Malaysia, the United States, Mexico and Brazil.
Marcus Ericsson will step aside during the opening practice session at Sepang, though Sauber has not communicated the plan for the other three sessions.
Leclerc, 19, made appearances in four practice sessions with Haas in 2016, en route to the GP3 title, before graduating to Formula 2 this season.
Leclerc has taken five wins and holds a commanding 59-point lead over Renault-affiliated rival Oliver Rowland with just two rounds remaining.
The Monegasque youngster has also made test outings for Ferrari, most recently during last month’s post-race running at the Hungaroring.
Sauber has not yet determined its 2018 driver line-up, with Leclerc a strong contender to step up to a race seat.
