Tottenham star Federico Fazio is winning praise in Italy.
Everton and Liverpool have been linked with a move for Roma's Kostas Manolas.
Nainngolan and Manolas appeared to be off the market but new developments mean there could be a twist in the tale.
Top class centre-halves are at a premium these days so imagine the scrum that will ensue if Roma's Kostas Manolas becomes available.
There's certainly a lack of top class centre-backs available at the moment, which will only increase the disappointment if Kostas Manolas renews at Roma.
The Gunners sent a scout to watch the defender play in Roma's clash with Porto.
With Chelsea's John Terry's career slowly coming to an end, could the likes of Bonucci or Manolas take up the mantle?
The Gunners are reportedly willing to more than double the Greek defender's wages.
Manchester United have reportedly made contact with the representatives of Roma defender Kostas Manolas.
Manchester United have been linked with Roma’s Kostas Manolas.