Ok let's get technical here.
LeBron committed to the Cavs on 7/11, but he didn't sign with the Cavs until 7/12.
If he called Love the night he committed, he was still a free agent, so can a free agent tamper?
Anyway, I bet saltlover chimes in soon with the exact answer to all of our tampering questions. Dude has the CBA memorized. Of course one of us could just google it and look it up ourselves, I would but for some reason when I try to go to the cbafaq.com site from work, I got the message that it's blocked "Reason: Not allowed to browse P0rnography category", go figure).