Don Garber, commissioner of the North American league, said changes to the 'designated player' rule could be made next week and may mean allowing teams two such exemptions from the salary cap rather than one.
"It is in all of our best interests to ensure that we have star players that can help drive interest in our league and grow attendance and ratings," Garber said in a teleconference.
"It's possible we might increase the number of designated players, we haven't gotten there yet but it's conceivable that we could do that."
Garber said that a change to that regulation was discussed with the players' union during recent contract talks but did not make up part of the final agreement.
Beckham, who suffered a serious Achilles tendon injury last week, earned a basic salary of $6.5 million with the MLS's Los Angeles Galaxy last season.
"Somebody that can clearly move the needle on ticket sales and on sponsorship and on television ratings and get that buzz factor that we got with (Cuauhtemoc) Blanco and with David Beckham and a lesser extent, but an important one, with Juan Pablo Angel," said Garber.
