Restrictive Convenant Clause

I have deputed to UK from TCS and working for a Client(Sub-group of TCS). Currently I have resigned from TCS and going back to India. Client gave me an offer to join them from Indian Branch for different role. But TCS HR is stating an restrictive covenant clause not to join the customer in same line of business for 12 months as per in deputation agreement in resignation mail. Below is the content in restrictive convenant clause: 1.) for twelve months following the Termination Date be engaged, concerned or involved in nay capacity with any business which is in competition with any Restricted Business 2.) for twelve months following the Termination Date offer to employ or engage or otherwise endeavour to entice away from the company or any group company any key employee 3.) for twelve months following the Termination Date employ or engage or facilitate the employment or engagement of nay key employee in any business which is in competition with any restricted business None of the restrictions in clause shall prevent you from: 1.) being engaged or concerned in any business insofar as your duties or wokr relate solely to geographical areas where tat business is not in competition with any restricted business 2.) being engaged or concerned in any business insofar as your duties or work relate solely to services or activities of a kind with which you were not concerned to a material extent during the relevant period Relevant period= 12 months ending on deputation periods termination date Restricted business means those parts of the business of the company and nay group company with which you were involved to a material extent during the relevant period Based on the above clause whether i can go ahead to join the customer back in India or i should restrained from joining for 12 months.?