Howie Roseman prefers to build an NFL team by drafting well and keeping his own players.

The Philadelphia Eagles general manager says the team faltered last year by going too hard after free agents who ultimately didn't produce.

"When you look at it, some of the mistakes we've made have been going out and spending a lot of money," Roseman said. "A lot of those mistakes were on guys that aren't our own. They were guys that we've brought from another organization, and we thought we knew."

Roseman didn't identify players by name, but he was clearly referring to DeMarco Murray and Byron Maxwell.