After being charged with assault arising from a bar fight, a client contacted an attorney about retaining his services. The attorney offered to represent the client for $175 per hour if the client paid a $5,000 retainer that the attorney would bill against. As part of the offer, the attorney stated that he would “discount” the hourly to $110 per hour if a plea agreement was reached that required less than one year in confinement. Why is the fee agreement a violation of the Model Rules?