I could go into so much depth about why you're out of your mind dismissing the influence of top players on those around them, particularly young players, but I'll just give you an extract I read before with details about the proven psychological effect that top players do have.
"The Köhler effect, named after the German psychologist Wolfgang Köhler. He found that weaker members of the Berlin rowing team improved their times fastest when paired with a more capable partner. This is partly about social comparison, raising aspirations by setting a higher benchmark, but is also about habits. As Anderson told me: “The weak link tends to work harder to keep up. But he also begins to absorb the attitudes of the top performer, who is often strong precisely because he is the first to the training ground.”
Also I know that anyone over the age of 30 is considered retirement age on this forum, but 23 isn't the age of a player in his prime, it's the age that a talent still has a lot more to learn to improve his game. And having top players around to learn from and compete with is how to improve a young player, otherwise they become complacent and turn into Joao Mario, a walking attitude with a big mouth.