Sebastian Vettel's return to his former Red Bull Formula One team as an official is "not on the cards at the moment," team advisor Helmut Mark has said. "The succession plan is something that is of course on the table,

There is a fair chance that Marko will have departed F1 by the time the Northern Irishman is on the verge of making his breakthrough, but until then, he will continue to play a major part in selecting driver pairings for both of Red Bull's F1 teams.

The former Red Bull driver has opened up on why everything fell apart for the team last year, which followed his exit.