Ibrahimovic has yet to put pen to paper on a 12-month extension to his contract at Old Trafford amid interest from Major League Soccer in America.
While the prospect of another new challenge may appeal to Ibrahimovic, especially given he's moved clubs frequently throughout his glittering career, United supporters would have been disappointed to see him depart after a stellar debut term at the club.
Ibrahimovic and Raiola are holding out for a two-year contract from United, but the Old Trafford club have been reluctant to upgrade the one-year deal they have offered to the 35-year-old striker who has been a big hit in his first season in English football.
The striker has scored 26 goals in all competitions for United after joining from Paris Saint-Germain last summer.
'In order to raise my level, I had to come to England and prove to everyone what I could do.
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Jose Mourinho has admitted that he has not been surprised by the way Zlatan Ibrahimovic has adapted so well to the rigours of the Premier League.
Per Liam Prenderville of the Daily Mirror, the report noted that it's Ibrahimovic's desire to win the Premier League title that has motivated him to stick around.
Ibrahimovic already has league winners medals from Holland, Italy, France and Spain in his personal collection and wants to add England to that list. He motivates you, he tells you things to your face if you're not doing well and must give more.
Ibrahimovic will serve the second game of a three-match domestic suspension when United travels to Middlesbrough on Saturday.
Having helped United take a 2-0 lead with a long-range free-kick, Ibrahimovic helped stave off a courageous Saints fightback, heading home a late victor to secure a 3-2 win for his team.