Is it a sin to support the manchester united because of their nickname the RED DEVILS?

im just wondering is it a sin for someone to support a team that has the nickname the red devils and who also has the picture of a demon like creature in its crest.

http://www.footballpictures.net/details.php?image_id=1179 (here is the picture of the clubs crest, near the bottom of this site page)
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