However, Krasic told Sport-Express: "I like United. They have such a high class defender in Nemanja Vidic."
Krasic knows Vidic well from Serbia duty and the days when the defender played for Spartak Moscow.
"But I also have great friends at Chelsea: Branislav Ivanovic and Yuri Zhirkov. So, I'm not 'sick' for any particular team.
"But, simply, Premier League matches are good to watch. The game is quick, stadiums are full and it's high quality."