Arsenal failed to sign Juventus defender Daniele Rugani last week due to demands of an obligatory permanent option.

Gunners boss Unai Emery was linked with the Italian for weeks as he attempted to thrash out a loan deal for the 25-year-old.

But Tuttosport says Emery was unable to bring Rugani to England because Arsenal were not willing to agree to a clause in the loan arrangement that would almost guarantee they buy him next summer.

And it would have cost them around £28m to take him permanently if a number of conditions were met.

But transfer chief Raul Sanllehi was opposed to the idea.

Instead they opted to strike a deal with rivals Chelsea to pay £4m up front for David Luiz with a further £4m next summer.