The trade was: 

Rashad "I'M ONLY USEFUL IN XBOX LIVE GAMES" McCants

and

Jason "NO I'M NOT MY BROTHER JARON, OH WAIT YOU DONT KNOW WHO HE IS EITHER" Collins.

for

Gerald "I'M LIKE THE ABSOLUTE, DREAMLIKE, BEST CASE SCENARIO OF COREY BREWER" Wallace.

Umm...why did this not happen mayn? I mean, the deal was reportedly a done deal. People in the locker room were reportedly acting like it already happened? This also explains why Rashad completely mailed it in, although that would've happened if this wasnt rumored anyways.