USC WR Bru McCoy -- who was expected to have a breakout season with the Trojans -- was arrested last week in L.A. for felony domestic violence ... TMZ Sports has confirmed.
And to make matters worse for the 21-year-old, McCoy has also been suspended from the football team.
Here's the deal ... a spokesperson for LAPD tells us McCoy was arrested July 24th for "intimate partner violence with injury" -- a felony.
We're told the alleged incident which led to Bru's arrest went down near the USC campus around 5:30PM.