It depends when the Central Powers win, and even then, they will be lucky to hold onto what they have. They won't be getting anything in the Balkans because the Bulgarian and Austro-Hungarian Empires will be the ones dividing it up. The Germans will likely gain a protectorate over Morocco, which they had wanted for a while, but I don't see Libya, Tunis, or Algeria being handed over to the ottomans, especially given the fact that the Med was an Entente lake. Egypt is simply not going to be handed over to the Ottomans. The British commanded the waves, even if France falls, that won't change the fact that the Germans lack the ability to project power outside of Europe.
By mid 1917 the British had conquered most of Mesopotamia and taken Baghdad, and had rebuffed the Ottoman offensive against the Sinai and had launched their own offensive. By late 1917, the Ottomans had lost Jerusalem and Arabia was all but lost to them. The only place I could see the Ottomans making any significant gains is north eastern Iran, given that after the fall of the Russians, they maintained dominance over the region between Tabriz and the Caspian until the end of the war.
If it's, by some miracle, a short war, the Ottomans might makes some gains in the Caucasus Mountain. If it's a long war the Ottomans are probably trading control of Mesopotamia, Arabia, and the Southern Levant for gains in the Caucasus Mountain and North Eastern Iran.