On Sunday's "Outside the Lines," ESPN examined league issues surrounding Cuttino Mobley's heart condition and the salary cap implications of his trade to the Knicks in November of 2008.

Mobley had apparently signed legal waivers relieving his previous teams of liability.

Joel Litvin, president of the NBA's league and basketball operations, declined to say whether the league knew about these waivers.  

"We're informed that not all teams necessarily file these waivers with the league and it is not even clear that they are required to," Litvin said in a statement.

Ultimately, the Knicks waived Mobley's physical requirement in order to complete the trade.

"They are just looking at 2010 and they're saying anything else we can get out of this is gravy," said salary cap expert Larry Coon.

The Knicks have pursued insurance coverage to pay at least some of Mobley's contract.  ESPN reports that so far $2.6 million of his salary has been paid by the league's insurance program.