Ah, there's the rub. The key to any negotiation is to "Care....but not that much". This was the mantra of Herb Cohen, considered to be one of the top negotiators globally at one time. His point, you need to be willing to walk away if the price is too high. And the opposing party needs to know and believe you are willing to walk away.
That uneasiness you are feeling that leads you to want to get this done sooner than later is exactly what JP Barry hopes Benning is feeling. JB needs to counter that by patience. By communicating, in subtle ways at first, that they are making alternative plans. Maybe, for example, trading EPs rights for Jack Eikel. Now, be clear, I would prefer not to do that deal. But if JP Barry believes that JB is willing to do such a deal if the ask gets beyond a certain point, it balances the playing field.
JP Barry does not have all the leverage. It just feels that way.