In a pre-draft blockbuster trade, the St. Louis Rams have agreed in principle to send the second overall pick in this year's draft to the Washington Redskins for three first-round draft picks and a second-round pick, according to a source in Cleveland familiar with the terms of the deal. The trade, first reported by FoxSports.com, cannot be signed off on, turned in and processed until the new league year starts Tuesday at 4 p.m. ET, but it is expected to become official then.