You can put stuff over an existing wrap, but I would NEVER guarantee that the overlaid graphics would come off without damaging the wrap underneath.
This is a situation where the design should have taken into account these areas that would need consistently replaced. Have one panel that has the sponsors on it, and then just replace that whole panel as necessary.
You can TRY to remove, but it won't work out well. Also, NEVER put calendered vinyl on top of cast vinyl. So, ixnay on the 3651-ay.
Gary