Vidosic, 28, who has a year of his three-season deal with the Swiss Super League club to run, believes he has been effectively priced out of a move elsewhere as Constantin seeks to cash in on a player he signed from Adelaide United for $700,000 in August 2013.
Perplexed by the club's stance, Vidosic – who has barely featured for Sion in the past six months because of a knee problem and the fluctuating preferences of French coach Didier Tholot, may have to wait until the end of August, when the transfer window closes, to have his future resolved.
"It's quite weird ... the president rates me as a two million euro player even though I only have a year remaining on my contract. Yet he says he wants to sell me," Vidosic said.
"To me, that doesn't make too much sense. Also I didn't play much for the last few months of the season and despite that I am told I am worth such an amount.
"The president can be quite erratic ... one day it's like this, the next day it's like that. It's very hard to read which way it will go.
"When the sports director told me how much the club wanted we gave each either a bit of a look."
Vidosic, who is open to a return to the A-League where he has had spells with Brisbane Roar and most recently Adelaide, added: "Things change so fast here there could even be a new coach in charge before the window closes. Anything is possible.
"I understand how it works here ... it's a bit of more of a business.
"The coach has some younger players he wants to develop who the club will hope to sell down the line.
"The president makes every decision ... in two years we have had seven coaches. You have a little slump and tend to get moved out."
On his next career destination, Vidosic said: "I won't rule anything out, and that includes the A-League.
"I loved my time back home both on and off the field for Adelaide. You are closer to family, and it's a great league with a great standard of football.
"Meantime, I will do my part training wise and if something happens, it happens. If not, I have one year remaining here.
"I haven't spoken to any other clubs yet, I have left it to Sion to see what they say. If they say I can go then Australia becomes a possibility, but obviously not with the transfer fee as it stands."
With 23 Socceroos caps, Vidosic is desperate to force his way back into the national squad.
"Playing for the national team is something I miss and it's a big part of my motivation to keep working hard on and off the field and in the gym to make sure everything is right for the new season," he added.
"It was frustrating missing the latter part of the season with the knee injury ... I was misdiagnosed and was training on a torn posterior cruciate ligament. Luckily, I got a second opinion because of the constant pain, and I needed to have a break to strengthen the quad muscles.
"It could have turned out to be far more serious. But now it's all fine."
