Having acquired Juan Hernangomez from Memphis on Sept. 15, the Celtics could turn around and trade him and his $6.9 million salary right away for another player earning about the same amount. EFE

In a pair of previous articles, we took a closer look at the trade restrictions placed on two groups of players who signed free-agent contracts this past offseason. The smaller of the two groups featured players who can’t be traded by their current teams until Jan. 15, since they re-signed on contracts that met a set of specific criteria. The other offseason signees we examined aren’t eligible to be traded until Dec. 15.

In addition to those two groups, there are a few other subsets of players who face certain trade restrictions this season. They either can’t be traded until a certain date, can’t be traded in certain packages or can’t be traded at all this season.

Listed below are the players affected by these trade restrictions. This list, which we’ll continue to update throughout the season as needed, can be found on our desktop sidebar under “Hoops Rumors Features,” or in our mobile menu under “Features.”

Players who recently signed as free agents or had their two-way contracts converted:

A player who signs a free-agent contract typically becomes trade-eligible either three months after he signs or on Dec. 15, whichever comes later. That means a player who signs on Sept. 22 would become trade-eligible on Dec. 22.

Similarly, players who have two-way pacts converted to standard contracts can’t be dealt for three months after that happens.

Because the NBA’s 2021 offseason calendar was shortened by a month, these trade-eligibility rules were adjusted slightly, but the three-month restriction still applies to players who signed their contracts on Sept. 27 or later. Players who signed before that may become trade-eligible slightly before the three-month anniversary of their signing.

Here are the affected players, along with the dates their trade restrictions lift:

Dec. 19:

Dec. 22:

Dec. 25:

Dec. 27:

January 6:

Jan. 14:

Jan. 19:

Players who sign free-agent contracts or have their two-way deals converted to standard contracts after Nov. 10 this season won’t become trade-eligible prior to the 2022 trade deadline (Feb. 10).

Players who recently signed veteran contract extensions:

In a normal league year, a player who signs a veteran contract extension can’t be dealt for six months if his new deal increases his salary by more than 5% and/or puts him under contract for more than three total years (including his current contract). An extension that meets either of those criteria would exceed the NBA’s extend-and-trade limits.

That six-month window has been reduced slightly for pre-training-camp extensions this season. However, many of the veteran players who have signed extensions exceeding the extend-and-trade limits in 2021-22 still won’t be eligible to be moved before this year’s deadline.

Here are the affected players, along with the dates their trade restrictions lift:

Jan. 25:

Jan. 30:

Feb. 3:

Ineligible to be traded before this season’s Feb. 10 deadline:

Players who were recently traded:

Players who were recently traded can be flipped again immediately. However, unless they were acquired via cap room, they can’t be traded again immediately in a deal that aggregates their salary with another player’s for matching purposes.

For instance, having acquired Juan Hernangomez from Memphis on Sept. 15, the Celtics could turn around and trade him and his $6.9 million salary right away for another player earning about the same amount. But if Boston wanted to package Hernangomez and, say, Al Horford ($27 million) in a deal for a big-money player, the team would have to wait for a little while longer to do so.

Typically, a player who has been dealt can’t have his salary aggregated in a second trade for two months, but that window was shortened for pre-camp trades this year to account for the compressed offseason calendar.

There are only a few trades that currently fall within the aggregation-restriction window, and most of them involved players who have been since been waived. However, we’ll update this list in the coming weeks and months to account for in-season trades.

Here are the dates when players traded this season can once again have their salaries aggregated in a second trade:

Nov. 7:

Any player who is traded after Dec. 10 (without being acquired via cap room) won’t be eligible to be flipped before the trade deadline in a second deal that aggregates his salary with another player’s.

Note: Only players on standard, full-season contracts are listed on this page. Players who sign 10-day contracts can’t be traded. Players who sign two-way deals can’t be traded for up to 30 days after signing.

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