According to ForzaItalianFootball, Roma are close to hiring Atalanta boss, Stefano Colantuono as their new manager. 

The Giallorossi have chosen not to offer Aurelio Andreazzoli, who took charge of the team after Zdenek Zeman was sacked, a long-term contract at the club after their disappointing end to the season, in which Roma were beaten by Lazio in the Coppa Italia final.

Italian newspaper, Mediaset, cliams that Colantuono will be offered a contract, if the negotiations with Blanc falls through.
At the same time, FootballItalia writes that former Lille coach, Rudi Garcia could be also be an alternative.

“We are taking a little time to take stock of the situation,” said Lille director general Frederic Paquet on 10Sport.
“Rudi Garcia is under contract with Lille and we have started working with him for next season, but there are discussions that are on-going.
“After five years of working together and failing to qualify for the Champions League, it is only natural for everyone to take some time to think things over.”