Tunisia borders then Italian controlled Libya. Perhaps they were thinking about some adjustment of this border. In any case, as far as I knowm Franco completely stiffed the Axis on any form of payback for their help.
Hitler wrangled with Franco over allowing German troops to pass through Spain to get to the British at Gibraltar. They met face-to-face in the Pyrennees just after the fall of France. Franco refused. Hitler said trying to negotiate with Franco was the most frustrating experience of his life. He finally met his match in negotiations.
It would be unfair to Franco to say he totally stiffed the Germans. He had justifiable reasons to not enter a formal alliance with the Germans. He also provided some active cooperation.
1. His country just finished a long, bitter and destructive civil war. It was one of the poorest countries in Europe when the civil war started, and the war didn’t improve the situation. He really wasn’t in a position to provide full participation in a bigger, longer war.
2. He wasn’t a stupid man. He was glad to have the help of the Condor Legion, etc..., during the Civil War, but was frankly glad to be rid of them when they were no longer needed. If he allows German troops into his country on the theory of allowing them to attack Gibraltar, does he ever get rid of them? He’s probably smart to have refused.
3. He did provide material help to the Wehrmacht in the form of the “Spanish Blue Division” which was formally designated by the Germans as the 242nd Infantry Division. It was an all-volunteer outfit of fascist Spaniards that Franco allowed to serve with the Germans on the Eastern Front. It had a splendid combat record until Franco recalled it in 1943. The “Blue Division” accomplished two things for Franco; it allowed him to show some payback to the Germans, and it got rid of some hotheads that might have caused trouble at home. By the time he recalled the division, it looked a lot less like Germany would win the war, and many of the hotheads had been killed by the Russians.
General Franco’s Spain paid all the war material supplied by Germany and Italy through shipments of ore. In the case of Germany, tungsten ore. Tungsten is used to harden iron alloys.
During last years of WWII, the protests of the allies, threatening the oil supply from Texas, prompted Gen. Franco to establish a free market of tungsten ore (when, in contradiction, all the Spanish economy was controlled by the government: the entire harvests had to be sold to the “National Wheat Service”, for instance). Whoever paid a better price for it, got it.
In those times the debt with Germany had been paid, so Hitler had to send gold from Switzerland. That motivated a compensation after the war, because that gold came from the sacking of the entire Europe.
However, the scheme seemed to be more fair that the one going on in Portugal.
AFAIK the ore continued reaching the French border until May 1944, although since February that year, under threats of the allied countries now clearly winning the war, the dispatches were oficially stopped.
Mineral ore paid for some material sold as junk after the war, during the years of the blockade, bought in order to repair it and put into service to help with the necessities of post-war Spain.