Most of our 'spine' will be at or approaching their peak, give or take: Silva, Aguero, Kompany (theoretically) and Hart, although Joe's got at least another ten years left of his peak years, but he's still improving.
There's been some bollocks said about the age of our squad. Doesn't mean we shouldn't have a serious eye to it (as we demonstrably have) but many a great defence (goalkeeper included) has had an average age of significantly over 30. Our first choice five (Hart, Zab, Kompany, Mangala, Clichy) is less than 28, with plenty of seriously quality young defenders coming through in the next couple of years. Don't forget John Terry was 'finished' four seasons ago. Players lose form - and get it back - especially defenders.
The average age of the squad will come down discernibly this year to place it somewhere around the middle in the Premier league, not that you'll hear much by way of congratulation from the rag lickspittle press.
Be so happy for our stand out performer to be Sergio, as it would almost certainly mean he'd remained pretty much injury free in his prime.
That said, Silva's looking hot.
So psyched about this season!