From a 14,000-er no less!
Anyway, just to chime in with my $0.02, this is indeed a big non-starter as, furthermore, Adm. Canaris was feeding the Spainards with the straight dope: that Hitler's vaunted war machine lacked the economic moxie behind it needed for staying power and that the mind behind it all was erratic.
Hitler definately tried to tempt Franco into becoming a full-fleged Axis flunky, but Franco shrewdly responded with a list of demands and conditions so long that Hitler was to remark he'd rather visit the dentist than Franco ever again!