 In 2007 , after a highly publicized feud between Finkelstein and an academic opponent , Alan Dershowitz , Finkelstein 's tenure bid at DePaul was denied . Finkelstein was placed on administrative leave for the 2007 – 2008 academic year , and on September 5 , 2007 , he announced his resignation after coming to a settlement with the university on generally undisclosed terms . An official statement from DePaul strongly defended the decision to deny Finkelstein tenure , stated that outside influence played no role in the decision . In 2008 , he was banned from entering Israel for 10 years . 
