India, March 27 -- Former South Africa and RCB batter AB de Villiers pointed out one key area of concern for an otherwise extremely well-rounded Mumbai Indians squad, as he argued that Trent Boult's gradual decline could prove to be a spot of bother for the five-time IPL champions.

While Mumbai have a powerful squad with world class quality in every area of the pitch, particularly with domestic excellence led by Jasprit Bumrah, Hardik Pandya, and Suryakumar Yadav, there are a couple of small weaknesses that opposition teams might look to target.

While spin bowling has been a recent area of concern, New Zealander Boult is not the same force he once was - and this is something that could hurt Mumbai, argued de Villiers.

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