As shaftr pointed out the player that will take Brian Anderson's place is Luis Terrero:
Prior to tonight's game vs. the Seattle Mariners, the Chicago White Sox purchased the contract of outfielder Luis Terrero from Class AAA Charlotte. Terrero, 26, is hitting .231 (15-65) with four doubles, four home runs and nine RBI in 20 games with the Knights this season. He will wear uniform No. 30.
Terroro's current minor league stats: .231/.254/.477/.731 with 15 Ks and 1 BBs.