If he suffers a long-term injury then I would wager substantially on Chelsea immediately looking to bring another keeper in the next possible window. How often is a keeper suspended, has he been suspended at all this season? (genuine question, don't follow PL much).
If he gets sold they will...
Is Chelsea your second team?
What could he achieve exactly? Buy his medals because he won't have the games to warrant being awarded them? Tell his grandchildren about never having contributed to any of the accolades that his club achieved? Who knows where Chelsea will even be in 30 years.
You...
Does make me wonder how this one was allowed to run down quite so far, but just not the sort of bloke that is going to force through a transfer and **** us in January is he. Absolutely no chance.
Eyes on the prize and we can sort out contracts if/when the big day happens.