Thanks Bose,
sounds like they want the best but are not willing to pay for it. If you have to pay to relocate yourself to another country and contend with double taxation, then I feel that it may not be worth it, I certainly cannot consider moving my family out for 6 months with the risk of having my contract ended at the end of that period and I'm not prepared to spend 6 months away from them.
I had heard that the Spanish wanted to know about all your assets elsewhere and include them in your Spanish tax bill. I also heard that they tax ex-pats at a higher rate.
Do you know if you FTE give you medical cover whilst you are there?
If the Spanish tax you, does that mean you have to become resident?
I'm not sure it maybe such a good deal as I might have initially thought.