One NBA executive has taken to calling Danny Ainge “The Bank.”

“Because you can’t do business unless you go to the bank,” he said.

With less than three weeks remaining before the Feb. 23 trade deadline, the Celtics are very much players in the transaction game. In addition to holding assets that other clubs covet, their stockpile of picks and high-quality complementary players also makes them valuable third-party participants to facilitate the deals of others.

“I don’t think any move of significance gets done before the deadline without Danny being given the chance to put his fingerprints on it,” said one general manager.

That latter point could soon come into play as the Clippers attempt to get Carmelo Anthony from the Knicks. We’ve been told that, while Doc Rivers said everything is on the table as he tries to improve the club, he wants to maintain his four-man core of Chris Paul, Blake Griffin, DeAndre Jordan and J.J. Redick.

In that the Clips don’t have much to give up, having dealt quite a bit away to get where they are now, which is still miles behind the Warriors. If the Knicks aren’t happy getting back some side players and expiring contracts, the Clippers will have to expand the deal. That would bring the Celtics into play and explain part of the reason why the Knicks are keeping an eye on them.

But the C’s do have interest in Anthony for themselves, as well. They have for a long time. And it’s no doubt their attention gained an even greater degree when word filtered out that the Celts are one of the clubs for whom Carmelo would consider waiving his no-trade clause.

The question in this case, and, really, in every case, is price. According to multiple sources, there have been, as of the weekend, no formal trade talks between the Celts and New York, but that was largely because the Knicks are believed to be asking a Melo’s ransom for the star.

Anthony could be the additional major scoring source the Celts need, and there is every reason to believe he would fit here from the technical hoop standpoint and as a teammate. But unless Ainge can get more than the 32-year-old Melo, it is hard to picture a scenario in which he surrenders one of the first-rounders he has coming from Brooklyn.

Another key element for the locals is that acquiring Anthony would knock them out of the free agent market this summer, and Ainge may want to see who becomes available there.

Under all these circumstances, Celtics involvement in an Anthony deal would appear to hinge on the Clippers and Knicks finding a creative way to make them want to take part, or Phil Jackson getting frustrated and giving the C’s a price that works.

In any case, the Celts are comfortable waiting it out. This, in fact, may be the best strategy as clubs come to realize just how distant they are from contending for a championship and, now unencumbered by illusion, begin to chart their long-term strategies.

Which brings us to the Bulls, who almost certainly have to rethink things after last week’s upheaval. Critical comments toward teammates from Jimmy Butler and Dwyane Wade and Rajon Rondo’s reply have left too many questions. It’s hard to fathom how Chicago can simply continue on the present path.

The Celtics have gone after Butler before, and no doubt they’d still be on the list of suitors if the Bulls make him available. Concerns were raised when he went a visually disinterested 1-of-13 off the bench in a loss to Miami after being punished for speaking out. Then Butler responded with 28 points, eight rebounds and seven assists in a win over Philadelphia the next time out.

If the Bulls do seriously entertain offers, they’re going to want a package that gives them players to keep them afloat in the playoff picture now while setting them up for a quicker rebuild — read: Nets pick. (And wouldn’t it be fascinating if one of the facets by which the Celts can land Butler involves taking back Rondo’s contract.)

As of now, sources from other clubs are telling us that Ainge is patrolling the marketplace in hopes that a player worthy of some of the assets he has accumulated becomes available. If that happens, the Celts are in perhaps the best position to pounce.

Until then, they will work the edges, as well. Nikola Vucevic did come up in a conversation with Orlando, but that was some three months ago. And Larry Sanders let it be known he worked out for the C’s, most likely to drum up interested elsewhere.

The overriding point of interest here is that, as we’ve written recently, the Celtics clearly need to get something done by the draft. If they do not deal the Brooklyn pick, they will almost have to take one of the intriguing point guards that presently sit atop the charts. And with Isaiah Thomas, Marcus Smart and Terry Rozier already in that mix, something will have to give.

So if nothing major gets done by Feb. 23, you can expect Ainge to work much later than banker’s hours when the draft gets near.