The Future Master looked at the Doctor and then at her, He knew the Doctor wouldn't budge so easily. He pulled her away from the Doctor so they could speak.
"He dies... in the future," he replied. "hes alone and I get there too late. He musnt know you know this, But he makes a very stupid decision that gets him killed. "
The Doctor blinked looking confused and wondering what they were going on about. He was curious about the fact the MAster wasnt speaking to him about it.