There are plenty of obstacles to Plaxico Burress' returning to the Giants: his legal situation, a potential suspension by the NFL and the Giants' impatience with his off-field issues. As if those factors didn't make the situation complicated enough, Burress' agent has informed the other 31 NFL teams his client might be available to play for them. And the Giants apparently aren't happy. Drew Rosenhaus, who has represented Burress since he signed with the Giants four years ago, sent an e-mail to all 32 teams earlier this week in which he indicated Burress could be acquired via trade, according to three people informed of the contents of the e-mail. The people, who requested anonymity because the e-mail was not to be discussed publicly, said it was a list of Rosenhaus' free-agent and draft-eligible clients as well as three players he deemed trade-able. All three are wide receivers: the Cardinals' Anquan Boldin, the Bengals' Chad Johnson and Burress. According to one of the people familiar with the situation -- a member of one team's front office who was on Rosenhaus' list of recipients -- the Giants had plenty to say earlier this week. Giants assistant general manager Kevin Abrams notified the rest of the league that the Giants had not authorized Rosenhaus to pursue trade scenarios on Burress' behalf, and that any inquiries about Burress' availability would constitute tampering. Another person informed of the situation said Rosenhaus sent out another e-mail yesterday in which he clarified he doesn't have permission to seek a trade for any of the three clients he listed.