Former Chelsea defender Branislav Ivanovic says they cannot afford to underestimate Zenit St Petersburg.

Chelsea have been drawn alongside Juventus, Zenit St Petersburg and Malmo in Group H of the Champions League.

"It's an exciting draw," said Ivanovic.

'My two ex-teams are in the same group and this is going to be very interesting to see the games. I was very proud to score the first official goal in history at Zenit's stadium.

"The stadium is really incredible and I hope everyone will enjoy the great atmosphere. It is one of the best stadiums I ever played in."