The expected NFL free-agent frenzy may begin as soon as Monday afternoon if the NFL Players Association signs off on a timeline being discussed, a source at the highest level told ESPN NFL Insider Adam Schefter. According to the projected timeline, the new league year would officially start Aug. 2 at 4 p.m. ET. Before that: • Teams can sign their own free agents and begin talking with other unrestricted free agents Monday afternoon. • Teams can begin signing unrestricted free agents Tuesday at noon ET but those contracts would not take effect until Aug. 2. • Teams can begin talking trades Monday afternoon. Any trades would become official on Saturday, July 30. Players would begin to report to their teams on a staggered scheduled. Another league source said it was unclear what teams would be allowed to do between the opening of camps and Aug. 2, when the league year officially begins. Read more: http://espn.go.com/nfl/story/_/id/6799301/nfl-transactions-start-monday-source-says