Luis Pedro Cavanda could be set to follow Modibo Diakite from Lazio to Sunderland, according to his agent.
Ulisse Savani represents both players and is refusing to rule out the prospect of right-back Cavanda making the same move Diakite completed last month.
When asked about Cavanda joining Sunderland, Savani told tuttomercatoweb.com: "We'll see. We are considering various possibilities and among them is Sunderland."
He also explained the reasons why Diakite chose Sunderland, stressing that it came down to the desire of the club to acquire the 26-year-old French centre-back.
Savani added: "The reasons why Inter and Napoli did not take Diakite are several and they are not economic reasons, but rather that Sunderland showed they really wanted him.
"We are grateful and the player is delighted to have become their player."
Nyatanga suffered the disappointment of relegation from the Championship last season but is being offered another tilt at the second tier after his contract with Bristol City expired, Sky sources understand.
The Glovers are seeking experience as they prepare for the first Championship campaign in their 118-year history.
That is something that the 24-year-old defender has in abundance, having played his part in Derby County's promotion to the Premier League back in 2007.
Yeovil are also keen on Painter, who is also free agent having spent the last three years at Brighton and Hove Albion, playing over 90 games for the south coast club.
The 26-year-old played a significant part in their promotion to the Championship back in 2011 and Yeovil are keen for the former Birmingham City left-back to boost their bid for second-tier survival.
Painter also played 68 league games for Swansea earlier in his career and spent time on loan at Bournemouth in League One last season.
