By Andrew Holleran The Dallas Cowboys will host the Philadelphia Eagles in primetime on Sunday evening, in a battle of the NFC East powerhouses. The Eagles beat the Cowboys in a close one in Philadelphia earlier this year. The Cowboys are favored to return the favor on Sunday evening. Cowboys defensive coordinator Dan Quinn is warning the Eagles before kickoff. The Cowboys’ most recent opponent, Seattle, attacked cornerback Daron Bland with wide receiver D.K. Metcalf, who had a big game. But Quinn is warning the Eagles to be careful if they try to do the same. “If they do, they’d better be car…