The Italian was not signed because of a continued change in his demands.
In the summer Leeds United were chasing plenty of talented Italian based players. The likes of Mirco Antenucci, Marco Silvestri, Tommaso Bianchi and many more all made the switch, but they didn't land all their targets.
The club, through Italian owner Massimo Cellino. had plenty of contacts within Italian football and Viviani was identified as a target.
It was reported by the Daily Mail at the end of July that Leeds were ready to 'seal the deal' for the player.
But at the beginning of August Cellino confirmed to Sky Sports that the move was off, citing his demands as the reason behind the collapse of a deal:
"He (Viviani) is not coming. He is a good player, a talented player, but I cannot sign someone like that.
"All last week it was demands about this, demands about that, asking for more and more so eventually I said ‘enough’."
It is now proving a real missed opportunity for Leeds. He scored again yesterday for the team he eventually did join on loan, Latina. It was his seventh goal for the club this season, in what has been a campaign which caught the eye of Italian national coach Antonio Conte back in February, as Latina defeated Brescia 2-1 away from home.
Now he has proved himself in the second tier of Italian football, in fact excelled himself, Roma are likely to give him a go in the first-team next season or send him out on loan to a lower team in Serie A.
Unfortunately for Leeds it seems this mercurial midfielder was an opportunity missed.