KKR nears agreement to acquire Envision for about $5.5 billion: source

Private equity firm KKR & Co is nearing an agreement to acquire U.S. physician services provider Envision Healthcare Corp for $46 a share, or about $5.5 billion, a person familiar with the deal told Reuters on Sunday.A KKR spokeswoman declined to comment.The agreement will come less than two weeks after KKR said it will buy U.S. business software company BMC Software in a deal which sources valued at $8.5 billion, including debt, making it the buyout firm's largest acquisition since the 2008