Sivasspor are on the hunt for a new left sided player who can play both in midfield and defence.
Boral’s contract runs out at the end of the season and is looking for a move away from Besiktas having not played any first team football this season.
Roberto Carlos has made the signing of Boral a top priority in January following Ziya Erdal’s disappointing performances.
Sivasspor who finished last season far beyond expectations in fifth place, currently find themselves in 17th place with only one win in nine games this season.
The Brazilian manager is said to be unhappy with the current run of form and even offered his resignation to club president Mecnun Otyakmaz following the 3-0 defeat to Bursaspor two weeks ago.
Boral moved to Besiktas from Samsunspor in 2012. The 32-year-old has previously played for Fenerbahce, Ankaraspor and Gençlerbirliği.