Leclerc and Marcos have had a well-documented partnership. The Monegasque has had the same engineer since his debut with the Scuderia, and their radio exchanges have often made for good - if at times confusing and infuriating - listening.
The Ferrari driver has had several fraught exchanges over the radio, but on Instagram Leclerc moved to wish his engineer well for the future.
"Grazie mille di tutto Xavi [Thank you so much for everything, Xavi]," he wrote.
“So many years working together, my first pole, my first win as well as my first year in Ferrari was alongside you and you always got the better out of me by pushing so hard no matter the situation we were in.
“Thank you for everything and good luck for your new adventures in the future."