I'm a bit confused on waivers and this is obviously the place to get answers (kudos to all of you for creating a human repository of football knowledge). When a player is cut by a team, he sometimes goes on waivers and can be claimed by other teams? When does this happen? Is it only after the trade deadline, during the whole season, or in the offseason, too? If a team claims a player off waivers, do they inherit his old contract, or do they just get exclusive negotiating rights? If they just exclusive rights, for how long?