Cishek, 28, had success last season as the Marlins closer, posting a 3.17 ERA and 2.17 FIP in 65.1 innings. However, he has had a rough start to the 2015 campaign, posting a 6.98 ERA and 4.23 FIP in 19.1 innings. Cishek opened the season as the Marlins' closer before the club opted to have A.J. Ramos begin closing games. His most recent appearance came on Sunday afternoon against the Mets when he allowed the go ahead run in a one run loss to New York.
The Marlins will announce the corresponding move on Tuesday. Miami will likely add a fresh arm to its bullpen but could also add starting or long relief depth. Ramos will remain the Marlins' closer with Bryan Morris and Mike Dunn serving as setup options.