There is an NCAA rule about going OOB and then returning and being the first to touch the ball. If a player goes OOB "under his/her own volition" (i.e. on purpose) it is a violation. For example, a player who runs OOB to avoid a baseline screen, then reenters the court on the other side of the lane and receives a pass.
However, saving the ball and then returning inbounds to retrieve it is
not a violation.
Just remember, if no volition then no violation
NCAA Rule 9-4. Player Out of Bounds
Art. 1. A player who steps out of bounds under his/her own volition and then
becomes the first player to touch the ball after returning to the playing court
has committed a violation.