The Argentina frontman is the second top scorer in Italy this season with 18 goals from 24 Serie A games, but after a bright start by Inter they have fallen away and are now battling to finish in the top four.
Icardi's representative is his wife, Wanda Nara, and the offer on the table would have seen Raiola take over her responsibilities.More news: I Know What I'll Do Against Chelsea - Hull City Boss
With the 24-year-old star being one of the club's targets, it seems that the Red Devils will welcome this move and try to bring him in as soon as possible.
Icardi is said to have not closed the door on this avenue just yet, but considering his current deal includes a buyout clause, and Inter won't accept less, Raiola isn't exactly needed right now.
Raiola is an agent that will be very familiar to Manchester United supporters given his clients Zlatan Ibrahimovic, Paul Pogba, Henrikh Mkhitaryan and Romelu Lukaku have all completed moves to Old Trafford since Jose Mourinho's appointment.More news: Ice hockey: Women's knockout round set with Canada on top
The in-demand striker's clause, which is valid in July, has come under much scrutiny of late with both Manchester United and Real Madrid reportedly ready to activate it this summer.
Icardi has still not played in the Champions League - despite his excellent reputation - and giant clubs that are in the competition are interested.More news: Larry Fitzgerald to return to Cardinals for 2018 season