Johnson brings pace, direct running and a willingness to attack space early. That matters for an Everton side that has often looked for quicker transitions and more threat in open grass rather than long stretches of patient buildup.
The broader signal is clear: Everton appear to want more speed in the front line. In a league where counter-attacking moments can decide tight matches, that is a logical shift.
McNeil offers something different. He is more of a rhythm winger: delivery, control, left-footed quality and a steady stream of service into dangerous areas. For Crystal Palace, that can help bring structure to attacks, especially against teams that defend deep and force wide players to create rather than just sprint past opponents.
That profile can be especially useful over a long season, when not every match turns into a transition game.
Swap arrangements are uncommon because both clubs must agree on value and need at the same time. That is what makes this one interesting. Everton look to have prioritised dynamism; Palace seem to have prioritised control and delivery.
The next story is simple: how quickly each winger settles. Early league fixtures will show whether Johnson can give Everton a more explosive edge and whether McNeil can give Palace a calmer, more crafted threat down the flank.