From the MLS website:
I think this may make sense for guys that Nelsen needed during the seasons but used sparingly: Frei, Boss. Could help them log more minutes in the offseason.
But for guys that were almost never used this year, Bekker Welshman... They should have been sent on loan earlier I think. Perhaps have the season with TFC to learn their system, and half the season elsewhere to get some real minutes.
Aparicio will likely fall in one of these categories soon.