Sabres now holds his rights until mid-august 2019.
Hurley was drafted 38th overall in 2013.
Since he's still a "bona fide college student" (CBA terms), I believe that Arizona holds his rights until he graduates from the CIS.
Not a 100% sure though...
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NCAA free agents
Anaheim
Grant Besse |F|Wisconsin|2013|#147
Arizona
Rhett Holland|D|Michigan State|2012|#102 Signed by HC Dynamo Pardubice, Czech Republic
Connor Clifton|D|Quinnipiac|2013|#133 Signed by Providence, AHL
Jedd Soleway|F|Wisconsin|2013|#193
Buffalo
Anthony Florentino|D|Providence|2013|#143 Signed by Rochester, AHL
Calgary
Tim Harrison|F|Colgate|2013|#157
Carolina
Brendan Collier|F|Northeastern|2012|#189
Collin Olson|G|Western Michigan|2012|#159
Chicago
Matt Tomkins|G|Ohio State|2012|#199 Signed by Rockford, AHL
Chris Calnan|F|Boston College|2012|#79 Signed by Binghamton, AHL
Colorado
Will Butcher|D|Denver|2013|#123 Signed by New Jersey, NHL
Ben Storm|D|St. Cloud|2013|#153 PTO Colorado, NHL
Detroit
James De Haas|D|Clarkson|2012|#170 Signed by Lehigh Valley, AHL
Mike McKee|D|Michigan State|2012|#140 PTO St. Louis, NHL
Edmonton
Evan Campbell|F|UMass-Lowell|2013|#128
Zachery Nagelvoort|G|Michigan|2014|#111
Florida
Evan Cowley|G|Denver|2013|#92 Signed by Springfield, AHL
Matt Buckles|F|Cornell|2013|#98 Signed by Springfield, AHL
Minnesota
Nolan De Jong|D|Michigan|2013|#197 PTO Colorado, NHL
Montreal
Colin Sullivan|D|Miami|2011|#198 Signed by Atlanta, ECHL
Nashville
Zach Stepan|F|Minnesota-Mankato|2012|#112 Signed by Kansas City, ECHL
Wade Murphy|F|Arizona|2013|#185 Signed by Worcester, ECHL
Teemu Kivihalme*|D|Colorado College|2013|#140 Signed by Karpat, Finland
Left Colorado after his 3rd year of eligibility
NJ
Alex Kerfoot|F|Harvard|2012|#150 Signed by Colorado, NHL
NYI
Taylor Cammarata|F|Minnesota|2013|#76
Doyle Sommerby|D|Boston University|2012|#125 Signed by Columbus, NHL
Ottawa
Robbie Baillargeon|F|Arizona|2012|#136 Signed by South Carolina, ECHL
Chris Leblanc|F|Merrimack|2013|#161 Signed by Orlando, ECHL
Pittsburgh
Blaine Byron|F|Maine|2013|#179 Signed by Springfield, AHL
Troy Josephs|F|Clarkson|2013|#209 Signed by Wilkes-Barre, AHL
San Jose
Cliff Watson|D|Michigan Tech|2012|#168 PTO Calgary, NHL
Gage Ausmus|D|North Dakota|2013|#151 Signed by Colorado, ECHL
St. Louis
Sam Kurker|F|Northeastern|2012|#56
Toronto
Dominic Toninato|D|Minnesota-Duluth|2012|#126 Signed by Colorado, NHL