CHICAGO, May 29 (Reuters) - Chicago Board of Trade corn futures fell on Friday as market players booked profits ahead of the month's end, with falling crude oil prices also pushing agricultural commodities lower.

• Oil futures fell 2% on Friday and were on track for their steepest weekly decline since early April after reports that the U.S. and Iran had reached agreement on a potential ceasefire extension. O/R

• Corn futures often track crude oil prices, as the grain is commonly used as feedstocks for biofuels. Markets expect any U.S.-Iran peace deal will cause sharp commodity price falls.

• Expectations of strong demand for soyoil for biofuel blending in U.S. fuels under the renewable volume obligations were also supportive for soybeans.

• Crop-friendly weather in the U.S. Midwest has also worked to push prices lower as market players await the U.S. Department of Agriculture's weekly crop progress report that will be released on Monday.

• The USDA reported weekly corn export sales in the current marketing year at 1,633,900 metric tons.

• CBOT July corn CN26 ended 9 cents lower to $4.46-3/4 per bushel.