This was an interesting read .......
http://www.nationalreview.com/article/443768/obama-fisa-trump-wiretap
If obama could get the IRS to target his opposition, my guess is that he could get the FBI and the CIA to do his dirty work too.
Keep I mind that the article in your link is dated, January 11, 2017.
Very interesting.
"From the three reports, from the Guardian, Heat Street, and the New York Times, it appears the FBI had concerns about a private server in Trump Tower that was connected to one or two Russian banks. Heat Street describes these concerns as centering on “possible financial and banking offenses.”
...
"A second, more narrow application, apparently not naming Trump, may have been granted five months later; the best the media can say about it, however, is that the server on which the application centers is “possibly” related to the Trump campaign’s “alleged” links to two Russian banks — under circumstances in which the FBI has previously found no “nefarious purpose” in some (undescribed) connection between Trump Tower and at least one Russian bank (whose connection to Putin’s regime is not described)."