(CNN) -- David Beckham will be braced for an adverse reaction from some LA Galaxy fans when he returns to California after his extended stay at Italian Serie A club AC Milan.
Beckham says real football people will understand the rationale behind him backing a timeshare agreement.
England midfielder Beckham originally joined Milan on a two-month deal, but his immediate impact and desire to become part of England's expected appearance at the 2010 World Cup finals saw a change of plan.
"I'm sure there will be a certain amount of criticism because people won't understand why I want to stay here, but we will have to see," said Beckham who has reportedly invested £3 million of his own money to help make his dream come true.
Galaxy confirmed: "The multi-million dollar deal compensates the LA Galaxy for the extended loan of Beckham at the start of the new MLS season and has been funded jointly by Milan and the player himself."
Under the innovative 'timeshare' agreement, Beckham will remain in Italy until the end of this season before returning to the United States to play for the Galaxy between July and October.
The 33-year-old then hopes to rejoin Milan after a holiday and play out the rest of the 2009/10 domestic and European campaign.
"Real football people will say 'He's passionate about playing for his country and knows what he needs to do to have the chance of playing in the World Cup,' said Beckham.
"To make myself available for 2010 I know what I have to do. The manager (Fabio Capello) always said I need to play at the highest level and this is one of the highest in Europe.
"Nothing is guaranteed in life and we have a lot of young players coming through, but I need to make sure I've given myself the best chance to be involved in it."
Asked if he would definitely retire after next year's World Cup, Beckham added on Sky Sports News: "No, I love playing for my country and I want to play as long as possible. I will be 35 by then but we will wait and see.
"A lot of people doubted me when I came back to play here, saying I wouldn't get a game or any time on the pitch. Hopefully I've surprised a few people and I feel I've got a good few years left in me."