Minor Things

For example, lets say the San Francisco giants called up a catcher from the minor leagues. He plays for a month, then they send him back down to the minor leagues. How much does he get payed for that month that he played in the Major leagues.

What minor league players are going to be impact players next year? Someone who is known but is either in the minors or wont qulify as a rookie this year. In my fantasy baseball keeper league we can carry over any non-rookie to the next year. So last year I’d be able to carry over Evan Longoria. They’ll also have to be able to play and be productive next season. Any suggestions?