Zenit preparing bid for Everton star Fellaini
Now big-spending Zenit, who splashed £32million to sign Fellaini's fellow Belgian Axel Witsel from Benfica in September, are also keen.
Coach Luciano Spalletti wants Fellaini, 25, to form the heart of his midfield, with Konstantin Zyryanov, 35, and Sergei Semak, a year older, nearing the end of their careers.
A Zenit source said: "The management expect to strengthen midfield. The signings will be of high quality.