Jimmy told the EE two days ago: "There is absolutely no chance of in someone on a short term loan, that is not an option I will pursue," he said.However Baas, who was released by Dutch second division side Volendam in the summer, is still at Pittodrie after impressing on Monday.
The 25-year-old spent six seasons at Haarlem and has made 141 appearances in the Dutch League, and may have to step in on Saturday to help out the Dons' crisis-hit defence.
Jimmy admitted yesterday that Baas could be drafted in as a short term replacement.
He told yesterday's Evening Express: "We have big problems in defence at the moment so I decided to have a look at Baas.
"He has come over to Britain and is willing to take a gamble to win a deal."He is financing this himself so Aberdeen have nothing to lose by taking him in on trial."
"If there is to be any deal it would definitely be short term for now."