The most striking element is the clause that gives Madrid a 48-hour first option on Ozil should Arsenal agree a sale for their playmaker to another Spanish club.

The option does not apply if Arsenal were to sell Ozil to a club outside of Spain and would require Madrid to at least match the deal that had been agreed elsewhere.

It is a very similar clause to the one Arsenal had inserted in their deal to sell Cesc Fabregas to Barcelona and which they subsequently did not take up when he moved to Chelsea.