Manchester United striker Dimitar Berbatov would consider a move to Russian club Anzhi Makhachkala, according to his agent. Big spending Anzhi, who acquired Inter striker Samuel Eto\'o in the summer, are reportedly ready to offer £15 (€17.5) million for the Bulgarian. And Berbatov\'s agent, Emil Danchev, has admitted that he has doubts over his client\'s happiness with life at Old Trafford, where he has featured mainly from the bench this season. \"We would be interested when Anzhi make a concrete offer,\" Danchev told the Daily Mirror. \"We will sit down with Dimitar and ponder this. \"I don’t know if Dimitar is happy in Manchester. He plays, then he just sits on the bench.\" Berbatov, who is out of contract at the end of the season, could earn as much as £7.5m (€8.5+) a season with Anzhi, according to reports.