My thinking is that they'll let Anthony Rendon leave and focus on Strasburg.
They've nurtured Stephen since they drafted him #1.
He's very appreciative how the NATS showed more concern for his MLB 'career', when they shut him down in the middle of a pennant race.
He's believes in the family unit...loves the schools and neighborhood.
Although, I'll bet he wouldn't mind pitching in a dome for 80+games per.