A Nebraska lawmaker who took aim at Omaha’s new tobacco tax is working on a deal that would allow the city to continue collecting it, at least until if fulfills its promise to help finance a University of Nebraska cancer research center.

Sen. Bob Krist of Omaha tells The Associated Press he will offer to change his proposal if the city will end the tax after six years, instead of the current 10.

Krist has introduced a bill that would prohibit Nebraska cities from imposing occupation taxes on cigarettes or alcohol, starting in 2015. The bill as-written would force Omaha to raise its $35 million contribution to the cancer center in another way.

The bill is among several tobacco-tax issues lawmakers will consider in a Revenue Committee hearing this week.