Is Suresh Raina's form a cause of concern for CSK?

Suresh Raina has looked a pale shadow of himself during the Indian Premier League. The southpaw, who missed the game against the Delhi Capitals on Monday has managed just 37 runs in the UAE leg, 17 being the highest score. The Indian leg also didn't go in favour of Raina with just 123 runs under his belt from six outings.