[Horner] had remained [since his sacking] officially employed by Red Bull as negotiations were held over the terms of his exit, with the Brit still having been owed more than £100m from a contract that had been due to run until the end of 2030.
Red Bull announced on Monday they had reached an agreement for Horner to depart, with Sky Sports F1 understanding that the 51-year-old took a reduced pay-out to ensure he will be allowed to return to the sport as soon as the summer of 2026.
If he were to return, I believe he would rather do it at a team of which he owns stakes, so he cannot be sacked like he did. He could build his own team like Szafnauer is currently trying.