FIG. 1 is a perspective view of a footwear upper showing my new design;
FIG. 2 is a first side elevational view thereof;
FIG. 3 is an opposite side elevational view thereof;
FIG. 4 is a front elevational view thereof;
FIG. 5 is a rear elevational view thereof;
FIG. 6 is a top plan view thereof;
FIG. 7 is a bottom plan view thereof;
FIG. 8 is a perspective view of the footwear upper in a second position;
FIG. 9 is a first side elevational view thereof;
FIG. 10 is an opposite side elevational view thereof;
FIG. 11 is a front elevational view thereof;
FIG. 12 is a rear elevational view thereof;
FIG. 13 is a top plan view thereof;
FIG. 14 is a bottom plan view thereof;
FIG. 15 is a perspective view of the footwear upper in a third position;
FIG. 16 is a first side elevational view thereof;
FIG. 17 is an opposite side elevational view thereof;
FIG. 18 is a front elevational view thereof;
FIG. 19 is a rear elevational view thereof;
FIG. 20 is a top plan view thereof; and,
FIG. 21 is a bottom plan view thereof.
The broken lines in FIGS. 1-21 represent portions of the footwear that form no part of the claimed design. The broken lines which define the bounds of the claimed design form no part thereof.