Id be very surprised if we accept any exchange for Branthwaite. Carlisle get a big cut of the transfer fee which is why we want big money for him aside from how good we believe he is.
It’s all the same really. Everton need money. Everton want to also add players. Carlisle get money. An exchange changes little, if the fee is less, Carlisle get less. If Everton get players, that they actually want, it makes no difference if they go and get more cash which they then use to go and buy players directly.
A part exchange could work best for all parties. As much as they need money, I’m sure they also plan to spend on new players themselves. Getting 30 or 40 million plus a player or two isn’t a bad deal. Villa are striking a similar deal with Juve as they get only 20m cash for Luiz, but also two players in two positions they want.