Yahoo! Sports is reporting that the NFL Players Association has launched an investigation into the relationship between agent Drew Rosenhaus and a former financial adviser. According to the report, Rosenhouas and Jeff Rubin had a close business relationship that may have led players to invest in a failed Alabama bingo casino, with the players losing as much as $46.3 million.

The relationship between the two men last around seven years. The NFLPA is investigating whether Rosenhaus should have " paid closer attention and kept his clients away from Rubin, founder of Pro Sports Financial." According to the Yahoo! report, "That relationship might have resulted in Rosenhaus breaching the fiduciary duties all agents who are certified by the NFLPA owe to their clients."

The investigation reportedly has many sources, including wide receiver Terrell Owens, who indicate Rosenhaus actively recruited players with Rubin, and he used the association with Rubin to increase his clientele.

Rosenhaus, who is based out of South Florida, has the most clients of any agent, with more than 140 players hiring him. Some of those players include former Miami Dolphins linebackers Zach Thomas and Larry Izzo, current New York Jets and former Miami safety Yeremiah Bell, current free agent wide receivers Jabar Gaffney and Chad Johnson, and former Miami running back Ricky Williams.

You can read more about the report here.