Johnson has struggled to hold down a regular first team spot at Eastlands, and Sunderland boss Steve Bruce wants the England midfielder to join his in-form side.
Sunderland came close to signing Johnson a year ago, before City swooped in and made a more lucrative offer to Middlesbrough.
Onuoha is already on loan at Sunderland, where he has helped make Bruce's side a defensive force to be reckoned with. He's valued at around £6 million and Sunderland want him on a permanent deal.
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Meanwhile, Chelsea and Real Madrid are set to fight it out for Independiente striker Cristian Nazarit. (Talksport)
The 20-year-old Colombian has apparently been dubbed the 'new Samuel Eto'o' and Chelsea are planning a £1.5m bid.
Source: DSG
