Wayne State University and the Wayne State University American Association of University Professors/ American Federation of Teachers late last week reached agreement on a new three-year contract. Under the agreement, the salary budget would increase by 3.25 percent each year for the next three years, said Nancy Barrett, provost and senior vice president for academic affairs. Most members are eligible for 2 percent raises. About 38 percent of the budget is set aside for merit raises. A separate pool of money covers raises that accompany promotions. Charles Parrish, a Wayne State political science professor and union president, said a date for a member vote had not yet been set; Barrett said the board of governors is expected to vote at its June 21 meeting.