Doctorwhovian
Fleet Captain
Day of the Doctor established that Ian Chesterton-who in Sarah Jane Adventures's Death of the Doctor was said to be immortal or something (Then again this is the same story that had the Doctor state he had 507 regenerations!)-is the headmaster of the Coal Hill School, where Clara now works. Both the school and Ian of course were there in the very first Doctor Who story (Which was revisited in Rememberance of The Daleks, although in the same time frame as the pilot), and Ian would be with the TARDIS crew as a companion (Along with fellow teacher and possible love interest Barbera Wright) for two years until "The Chase"
There were plans to bring William Russel back as the character for the 20th anniversary season in 1983, in "Mawdryn Undead". However due to illness or some other project, Ian couldn't appear and the role was recast with the Brigadier.
William Russel recently had a cameo in the drama Adventures In Time And Space as a security guard, although I'm not sure how his health is now.
So with the next episode, the Caretaker, taking place largely at Coal Hill, is there a chance we'll see Ian again in some capacity? Yeah, there's the immortal/haven't aged a day thing from SJA, but they can always ignore that like they did with the regeneration limit.
Then again there was Janet Felding spotted doing something with Capaldi, and they might not want to put too many former companion cameos in one season, but so far there's been no trace of Tegan in the previews for new episodes.
There were plans to bring William Russel back as the character for the 20th anniversary season in 1983, in "Mawdryn Undead". However due to illness or some other project, Ian couldn't appear and the role was recast with the Brigadier.
William Russel recently had a cameo in the drama Adventures In Time And Space as a security guard, although I'm not sure how his health is now.
So with the next episode, the Caretaker, taking place largely at Coal Hill, is there a chance we'll see Ian again in some capacity? Yeah, there's the immortal/haven't aged a day thing from SJA, but they can always ignore that like they did with the regeneration limit.
Then again there was Janet Felding spotted doing something with Capaldi, and they might not want to put too many former companion cameos in one season, but so far there's been no trace of Tegan in the previews for new episodes.