Daily Sports mentions that while there were rumors the Mariners might be willing to move Chone Figgins to third in order to make room for Nishioka at second, an unnamed source apparently told the paper that the Mariners had yet to actually sit down and talk about Nishioka.
Sport Hochi says that the US media recently said that the Padres and Orioles may bow out of the bidding due to a lack of funds (posting + contract).
A post by the Baltimore Sun's Jeff Zrebiec seems to confirm this position for the Orioles:
From what I've been told, the Orioles still haven't decided whether they will bid or not on Nishioka, who was posted by the Chiba Lotte Marines earlier this week. And even if they did bid, few expect that the total would be enough to land the opportunity to exclusively negotiate with the player. The Orioles do have some interest in Nishioka, but they also think the price of the posting fee, coupled by the contract that the player will be looking for, will far exceed what they view as the infielder's worth.
And MLB.com's Corey Brock echoes similar thoughts for the Padres in a recent tweet:
Hearing the #Padres have no interest at all in Japanese infielder Tsuyoshi Nishioka, or at least not the $$$ to would take to bid/sign him.
MLB teams have until 5pm EST on the 23rd (7am on the 24th Japan time) to submit bids for Nishioka.