if they manage to sell "it" to the banks they are going to sell Ripple to the banks not XRP. in other words the banks are not interested at all in XRP the token that the ripple labs controls, they are interested in the technology called Ripple and want to adopt that for themselves.

price of XRP may get some pumps like it always does in case of news like this because of the hype but in the end XRP is still a centralized shitcoin with a huge supply which can not go up in the long term.