Jan 21 (Reuters) - Sanofi SA is said to be near a deal to buy drug maker Bioverativ Inc for more than $11.5 billion, the Wall Street Journal reported, citing people familiar with the matter.

The deal, which could be announced as soon as Monday, would value Bioverativ at about $105 a share, the Journal reported. (http://on.wsj.com/2mYJulp) Sanofi and Bioverativ were not immediately available for comment outside regular business hours.

(Reporting by Shubham Kalia in Bengaluru; Editing by Paul Simao)