"Call you on a screwdriver? Don't be silly. The TARDIS has a phone."
The Doctor gestured absently towards the center console as if it was somehow obvious. It wasn't. Depending on the desktop depended upon how recognizable the navigational tools on the console. This was more Gallifreyan in design and had little features that looked recognizably human.
"Don't worry about me. Go on. Say hello to Hermione Granger for me. Plenty to do. The City brought me here and now it's time for me to do what I do best."
The Doctor wasn't pushing Leto away exactly, but there was a gentle shooing happening.