What will happen if the concentration of glucose in the water outside of a cell is higher than the concentration inside?

Water will tend to leave the cell by osmosis.

To understand what is happening here, you need to understand the principle of osmosis and tonicity.
Osmosis is the net movement of WATER and not SOLUTE across a semipermeable membrane from an area of lower solute concentration (which in this case is the cell) to an area of higher solute concentration (outside of the cell).

The ability of an extracellular solution to make water move into or out of a cell.
Glucose cannot cross the cell through osmosis. Glucose is transported across a cell through active transport and not through osmosis.