NFL agent Drew Rosenhaus has filed a grievance against Philadelphia Eagles wideout DeSean Jackson, alleging the former client owes him more than $400,000 in unpaid loans.

Rosenhaus is alleging that Jackson took multiple loans from him, beginning when Jackson hired Rosenhaus to represent him in November 2009 and continuing through March 2012, a source told Yahoo! Sports.

Rosenhaus has filed a grievance with the NFL Players Association over the loans, multiple sources confirmed. Jackson severed ties with Rosenhaus in late May.

Jackson could not be reached for comment, and has yet to secure a new agent after leaving Rosenhaus last month. Rosenhaus declined comment for this story. A call, text and email to the NFLPA was not returned.

The split between the Eagles wideout and Rosenhaus has made headlines in recent days, after it was reported by multiple outlets that Jackson was considering fledgling agency Roc Nation Sports. A creation of hip-hop artist Jay-Z, Roc Nation has begun to push into NFL representation in recent months, including a controversial signing of Jets rookie quarterback Geno Smith. The NFLPA is allegedly investigating whether the rap mogul broke regulations during the recruitment of Smith to the agency.

A spokeswoman for Jackson denied he was entertaining any new agents, including Roc Nation.

Jackson signed a five-year deal with the Eagles in 2012 that had a potential value of $48.5 million.

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