While the Seahawks could make personnel moves at any time — teams can release players and sign their own free agents whenever they want — the next specific date for a potentially significant transaction on the NFL calendar is Feb. 20.
That’s when NFL teams can begin placing franchise tags on pending free agent players, a period that lasts until March 6 (a tag binds a player to the team for one year but then means he gets either an average of the top five salaries at his position or 120 percent of his previous year’s salary, whichever is greater).