S&T Question

[spree8]

I'm sure this question has been asked and answered before, but is it possible when signing and trading two restricted free agents for eachother, to add in other players or just 1 for 1? I know picks and cash can be involved, but what about players.

For example..

Shannon Brown(RFA)-s&t + Matt Barnes

for

Aaron Afflalo(RFA)-s&t


Greatly appreciate some help fellas.