Earlier today, I named seven players guaranteed to be traded by the July 31st deadline. Not surprisingly, all seven will be free agents after the season and play on teams that aren't in playoff contention now and aren't expected to be a month from now.
On the flip side, there is an entire different group of players that might become available if their teams either fall out of the playoff race or fail to make a run to get back to within striking distance. Then there are the rebuilding teams, such as the Astros and Marlins, with valuable trade chips who are under team control for a few more seasons. Trading them could make sense if a particular organization feels that the return will help expedite the rebuilding process.
Which teams will be left standing as playoff contenders in late July is still to be determined, but it's likely that many of them will be asking about the availability of these six players in hopes of acquiring them for the stretch run and beyond.