The city manager shall evaluate unclassified employees other than the city clerk at least annually. In making these evaluations, the city manager shall consider the following: total performance; extent and finality of responsibility; diversity, difficulty and impact of the individual's work. The city manager shall, based on such evaluation, determine the salary to be paid an unclassified employee, which salary shall be within established salary ranges for that employee's position. The city manager shall, in addition, have discretionary authority to make available additional fringe benefits to unclassified employees on an individual basis, which may include additional leave accrual and limits, increased insurance coverage, deferred compensation allowance, severance pay, vehicle allowance and similar fringe benefit considerations as are appropriate in the individual circumstances. The city manager shall notify  the city council of such fringe benefits . The benefits  shall take effect after the next regular council meeting, unless the city council  objects to the proposed benefits .