Two-time former champions and the most consistent team of the season, Chennai Super Kings will lock horns with late bloomers Mumbai Indians in a high-voltage IPL summit clash tomorrow. This will bring the 47-day T20 extravaganza to a relatively controversy-free end. Ever since the 2013 spot-fixing scandal, controversy has dogged Chennai Super Kings and this season too the undervaluation of the franchise acquisition to a trust for Rs 5 lakh came under the Enforcement Directorate scanner. But it was nowhere close to the furore that was generated in 2013. Season eight was not entirely free of drama with reports of a bookie approach, some ugly on-field brawls and breach of protocols.