I don't think that is enough. As risky as it is I think you need to turn the keys of the whole franchise over to Tata. He can get a feel for things now and then after that LC break it's season #2 but he needs complete control and to be allowed to bum's rush most of, if not all of the backroom people out of TFC right down to (and especially) the physios.
Knowing that he is probably going to bail in 2 years I would get something in the contract for him to appoint successors too and hopefully change the culture.