All quotes of capacity include media seats and the like, it's not just fans. There's a breakdown of the capacity split in the planning documents somewhere but can't seem to find it.
All the seats provided at the top of steps such as the below are extra; these weren't included in the original planning drawings. It wouldn't have been too difficult to get to 53k from 52,888 by adding these in. Could probably make up that difference from the East stand alone.
No idea what the final figure will be but i'm sure the club will confirm it before the official opening.
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