Fans' organisation Stretford End Flags wants its backers to vote by 20:00 on Sunday.
United fans from across the world were challenged to come up with a new design and SEF has shortlisted three. Anyone who has donated to the group can vote on the best one via the SEF forum here.
Here they are.
A SEF spokesman said: "This new banner is likely to replace the existing FEAR banner and will possibly be taken from the Edge of The Flowers banner to the edge of the Scoreboard.
"As a result, the banner is likely to cost in the region of £650 to make, so all donations are gratefully received.
"You can donate by sending a paypal donation to firstname.lastname@example.org"
Voting ends at 20:00 on Sunday and SEF will then announce the winning design, which will be put up by mid December.