Watch: Gavaskar explains issue with Gill’s technique, calls for Agarwal to be given a look in Sunil Gavaskar feels Shubman Gill has to work hard on his technique and the Indian team must consider a replacement for the young opener for the England Tests. File image of Sunil Gavaskar | AFP Former India captain Sunil Gavaskar feels Shubman Gill has to work hard on his technique and Mayank Agarwal should be considered as a possible replacement for him at the top of the order for the upcoming Test series against England. India will want to prepare well for the five Tests in England, a place where they haven’t won a red-ball series since 2007. Having lost the ICC World Test Championship final to New Zealand, Virat Kohli and Co have plenty of work to do before the first Test against England begins on August 4 in Nottingham.