The term 'purchase a player's minor league contract' comes from the days before the major league teams controlled the minor league teams.
Minor league teams used to be independent entities that had no affliation with a major league team. They negotiated their player's contracts and paid their salaries. The players were employees of the minor league team. If a major league team wanted a player from the minors to be on their team they would have to negotiate a purchase price with the minor league team's owner.
Today, even though they play in the minors, a minor leaguer is an employee of the major league team. The major league team negotiates the minor leaguer's contract and pays their salary. The minor league team owner pays team expenses. If a major league team wants a minor leaguer in their system to come up to their team, they simply tell the minor league owner that they are going to 'call up' the player. That player will be replaced by another player in the system.
So the term 'purchase the contract' is not really accurate in today's game.
You sign a "split contract"
A baseball player's salary will not change from the Majors to the Minors if he has a Major League contract. There are minor league contracts for those players.
Pittsburgh Pirates minor league players was born on 1989-09-16.
Minnesota Twins minor league players was born on 1985-05-31.
Arizona Diamondbacks minor league players was born on 1983-05-20.
Philadelphia Phillies minor league players was born on 1990-07-19.
Chicago Cubs minor league players was born on 1985-05-15.
Atlanta Braves minor league players was born on 1984-01-14.
Milwaukee Brewers minor league players was born on 1981-06-22.
A contract which pays the same regardless of whether the player is assigned to the NHL team or to the NHL team's minor league affiliates, as opposed to a "two way" contract which assigns different pay rates depending on whether the players is assigned to the NHL team or to the NHL team's minor league affiliates.
A split contract is typically one that's signed by players who have prior major league experience and are signed to a minor league contract. Generally they are given an invitation to the major league clubs Spring Training. A split contract includes separate salary rates while they're in the minor leagues and while they are on the Major League club. The major league minimum salary is currently $400,000 for an 183 day season. If the player is assigned to the minor leagues at any point in the season he'll earn a daily rate of at least 60% of the total of his minor and major league salary from the previous season.
None. There have been 13 affiliated minor league players and 4 unaffiliated minor league players to come from GSU.