Exhibit 23.1
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-4 of MB Financial, Inc. of our reports dated February 27, 2015, relating to our audits of the consolidated financial statements and internal control over financial reporting, which appear in the Annual Report on Form 10-K of MB Financial Inc. for the year ended December 31, 2014.
We also consent to the reference to our Firm under the caption “Experts” in the Proxy Statement/Prospectus, which is part of this Registration Statement.
/s/ RSM US LLP
Chicago, Illinois
January 12, 2016