Manchester City are in talks about signing Benfica centre-back Ruben Dias in a deal that could see Nicolas Otamendi move in the opposite direction.
A right-sided central defender has been Pep Guardiola's priority since City failed to replace former captain Vincent Kompany when he left the club nearly 18 months ago.
Napoli's Kalidoud Koulibaly was City's preferred target for much of the summer but negotiations over the French international have proven difficult and any signs of a deal look over.
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Goal understands that City are now ready to make a move for Portuguese international Dias, who could cost around €55million (£50m/$64m).