The 2019 NFL league year doesn’t begin until Wednesday, March 13 at 4:00 p.m. ET, but as has been the case for several years running, that doesn’t mean action won’t pick up sooner.

On Monday at 12:00 p.m. ET, the “legal tampering” window opens across the NFL, which will allow teams to get a head start on chasing down their desired targets.

But what exactly can teams do during this window? What are they restricted from? Here’s a quick crash course provided by our friend over at Chiefs Wire.

Only applicable to unrestricted free agents, and not restricted free agents or exclusive rights free agents.
Negotiate “all aspects of an NFL player contract” with a player’s representation. Teams cannot talk to restricted or exclusive rights free agents during this two-day period.
Teams can not negotiate directly with players, even if they act as their own representation.
Contracts can not be executed or agreed to in principal during the legal tampering window.
Players cannot take team visits during this period or make travel arrangements for visits.
Contract announcement can not be made by teams until the new league year begins.

Violating any of these terms can lead to significant fines, losses of draft picks and more, so the guidelines are to be followed exactly.

Despite many of the restrictions, expect the New York Giants to be extremely active once the clock strikes noon. It’s going to be a busy day and a busy week.