Average profit (n.) is nothing but the total mass of unpaid labour, shared out among capitals in proportion to their size.
4 definitions
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Average profit (n.) is set behind the capitalist's back: the surplus-value of his own branch matters to his class more than to him, and he does not see it, understand it, or care.
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Average profit (n.) seems immanent in capital, independent of exploitation, as if exploitation explained only the deviations from it.
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Average profit (n.) is itself a product — of a social life under quite particular historical relations — so there can be no rent "over profit" where capital does not yet rule labour.