But the mayor said he remains confident that MGM and Penn Gaming will engage in a "robust competition" to win the support of the city and its residents.Sarno announced earlier this year that the city would engage a casino selection process when it appeared that at least four and as many as six companies might seek to develop gambling facilities in the region's largest city. But only the three companies - Ameristar, MGM and Penn Gaming - submitted preliminary applications before the Oct. 11 deadline.The city plans to select and negotiate a host community agreement with one of the companies, though it has not ruled out the possibility of negotiating with more than one firm. Any agreement would have to be approved by voters in a referendum likely to be held next year.MGM and Penn Gaming have until Dec. 14 to submit a $250,000 application fee to the city and until Jan. 3 to submit more detailed proposals, said Kevin Kennedy, the city's economic director."I see no reason to change the process," Kennedy said.