The NFLcalendar may be changing. (Gene J. Puskar / AP)

The NFL calendar may be on the verge of a major change, one that would move the big post-Super Bowl events like the scouting combine and the draft and extend the league’s dominance over a longer stretch.

Get ready for the combine in March and the draft in mid-May. The NFL and the NFL Players Association, which would have to approve the changes, reportedly are on the verge of approving the changes for three years, ESPN’s Adam Schefter reports, at the annual spring meeting being held in Boston.

The start of the new league year, when free agency begins, is likely to precede the combine, rather than following it. The combine this year was Feb. 20-26, the league year started March 12 and the NFL draft was April 25-27.

In other business on the Boston agenda, owners will choose sites for Super Bowl L and LI on Tuesday.

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