According to Jose Felix Diaz of Marca, Raiola has been in Los Angeles to listen to what the Galaxy have to say. The offer is not said to match the terms he could receive at Old Trafford in terms of wages.
While United do have the option to extend Ibrahimovic's contract into a second season, the player has reportedly not made his mind up yet over where his future lies.
"The defining question will likely be whether the striker feels he has conquered the Premier League after just one season," Diaz wrote. It's added that Ibrahimovic will likely reject offers from the Chinese Super League, despite a two-year deal worth €30 million (£26.2 million) said to be on the table.
Diaz added that United are keen to extend the 35-year-old's stay at the club after a brilliant debut term in the Premier League. As this graphic from WhoScored.com illustrates, he's been the main man up top for the Red Devils this term:
With 15 goals and four assists in the Premier League already in 2016-17, Ibrahimovic has ended any doubts about his ability to thrive in English football.
That could be a worry to United fans, though. After all, there seem to be options available to the striker around the world that would appeal to him.
Additionally, if the Red Devils fail to qualify for next season's UEFA Champions League, Ibrahimovic might decide he wants one last crack at a trophy he's never won.
Given his age, United would surely have contingency plans in place should the striker decide to walk away at the end of the season. However, few players in world football mesh ability, physicality and personality quite like Ibrahimovic.
Manchester United Monitoring Moussa Dembele
A recent report from Delaney had suggested that the Red Devils were exploring other options in the final third with a deal for Atletico Madrid striker Antoine Griezmann looking less likely, with Bayern Munich's Robert Lewandowski and AS Monaco man Kylian Mbappe possible targets.
Dembele is said to be another alternative, according to Delaney:
While Dembele would not be considered as a direct alternative to Griezmann due to his youth, and United do want to sign a marquee name, he is seen as someone who could not only have exactly that kind of status in the future but also contribute a lot of goals and energy to the team in the present.
Chelsea have also been linked with a move for the France youth international. Per BigSport, he's had quite the impact since moving to Celtic from Fulham in the summer:
Of course, if Dembele did make the switch to a club such as United or Chelsea, it would be a big step up. Not only in terms of the opposition he'd be up against on a weekly basis, but in terms of the expectations that would be placed upon him.
Getting regular football is the most important thing for the 20-year-old at the moment, though, as game time has coincided with his progression in Glasgow. It would be a surprise if that's something United could guarantee him in the 2017-18 season.