Paul Monaghan, Red Bull Racing's chief engineer, is set to leave the F1 team, and RacingNews365 understands the Briton has chosen Cadillac as his next destination.
Reports of Monaghan's potential departure first emerged earlier this week via a German podcast.
RacingNews365 has since confirmed through multiple sources in the Red Bull Ring paddock that the long-serving engineer is preparing to leave the Milton Keynes-based outfit.
According to RacingNews365 sources, the 58-year-old will join F1 newcomer Cadillac, where he is expected to take up a senior leadership role within the team's engineering department.
Monaghan is also understood to have received an offer from Aston Martin, where he was lined up for a key leadership role within the team's engineering department.
While his destination now appears clear, the timing of his departure remains uncertain.
Monaghan continues to serve as Red Bull Racing's chief engineer, and although multiple well-placed sources have confirmed his intention to leave, the formal exit process has yet to begin.
As a result, the Briton is expected to serve a period of gardening leave, meaning that even if he departs at the end of the 2026 season, he is unlikely to begin work at Cadillac before the summer or autumn of 2027.
RacingNews365 approached both Red Bull Racing and Cadillac for comment, but neither team wished to comment on the matter.
Monaghan is regarded as one of the last remaining senior figures from the Christian Horner era at Red Bull, having stayed with the team while many of his long-time colleagues departed in recent years.
Having joined Red Bull in 2005, he has played a pivotal role in every championship-winning campaign the team has enjoyed, contributing to both Sebastian Vettel's four consecutive world titles and the current era led by Max Verstappen.
Monaghan began his F1 career at McLaren in 1990, initially working in research and development before becoming David Coulthard's data engineer.
He moved to the Enstone-based team in 2000 during its transition from Benetton to Renault, where he became a race engineer, working with both Jenson Button and Fernando Alonso.
As Alonso's race engineer, Monaghan played a key role in the Spaniard securing his maiden F1 victory at the 2003 Hungarian Grand Prix.
Following a brief spell at Jordan, Monaghan joined Red Bull in 2005, where he has enjoyed the most successful chapter of his F1 career.
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