Really nice modern design, I love the way you've incorporated the eagle, only thing is the roses should be red (or burgundy at a push) not white

The roses are the red rose of lanchasire. But i think that red is the color of the club's rival and i think it would be better that the roses' color match with the crest

The white Rose is the symbol of Yorkshire, so it should not be on the crest of Manchester city. Plus, Manchester United have actually had a crest with a white rose on it.

http://www.historicalkits.co.uk/Manchester_United/Manchester_United.htm

And City have worn Red and Black change shirts many times, and had a red rose on their old crest.

Okay spider, lets see what i can do to fix those roses :D: