What a coach offers financially illustrates most clearly how they anticipate a player to fit into their organization.
If a player is recruited as a walk-on the coach may have high hopes for the player to fill a great need the team may have.
Any player offered such a spot is provided the opportunity to show that the coach made a great decision by giving him the chance.
If on the other hand a player is offered 50%, 60% or more, especially as a position player (since most of the money understandably goes to pitching) that is an indication that the coach expects the player to provide a positive impact to the team.
A player that is a position player, that gets a strong offer, is expected to produce day one, not sit on the bench to learn the program and hone his skills, so he is ready when called upon.
This is the language of baseball that we have learned.