It's been reported that the experienced defender has been offered a lucrative two-year deal with Seongnam Ilhwa Chunma but has been frustrated by United's wheeling and dealing.

Adelaide coach Aurelio Vidmar said the club needed to get adequate financial reparation if Ognenovski was to leave South Australia after just one season.

"Personally I think Sasa will go but you've got let the clubs negotiate," he said.

"Someone like Sasa is going to be extremely hard to replace but we are probably resigned to the fact that he's going to go."

"(But) You still need to get a fair and reasonable compensation for that particular player."

It's expected those negotiations should be completed in the next couple of weeks.

Vidmar said there wasn't any animosity towards the former Queensland Roar player despite his decision to leave the club.

"There's no point in getting stroppy and worrying about it because in the end this club has got a pretty good history in terms of allowing people to get on with their futures and to make a better career choice and there's no way this club is going to stop anyone," he said.

And despite the frustration surrounding the contract talks, Vidmar said he was confident Ognenovski would continue to display a professional approach on the pitch.

"I wouldn't say it was unsettling, I think there are some players who can put those things aside and worry about football ... and there's probably other players that find things like that affect them," he said.

"I think Sasa is in the category where whatever happens outside his football he can put it aside and when it comes to playing he can concentrate 100 per cent."

Ognenovski isn't the first Adelaide player to be poached by overseas clubs with Nathan Burns and Bruce Djite heading abroad at the end of last season.

Djite also found the Reds' tough negotiating over transfer fees frustrating but admitted a communication breakdown with administrators had caused some of the angst.