Who gets DFA’d by Pittsburgh Pirates when Harrison and Mercer return?

The Pittsburgh Pirates will benefit greatly from the returns of Josh Harrison and Jordy Mercer to the team in the near future, mostly in the form of an improved bench. It remains to be seen whether Mercer and Harrison return to starting roles and how their playing time will be allocated, but what we do know is that when those two return to the active 25-man roster, two players have to go. Which two players on the active roster will be the ones to be bounced to make room for Mercer and Harrison? That is, if both players come back before rosters expand on September 1st?

The way I see the roster right now, there are really only four options that could be replaced by those two returning players:…