Since NFL player contracts aren't fully guaranteed and constrained by the salary cap, a majority of them are year-to-year propositions. Players are released in each offseason due to the salary cap or because their performances don't justify their salaries. Here's an early look at 10 guys who the National Football Post says could become salary cap casualties after the season. Michael Vick signed a five-year, $80 million contract after his impressive 2010 season, but since then he has been a disappointment. Through six games this season Vick has been sacked 17 times and has been responsible for 13 turnovers. The Eagles can gain $12.7 million in cap room by releasing him.