Pretty sure its all balance sheet initially. Ie cash reduces by 450m (or more likely a bit of cash and a bit of debt); intangible assets - player contracts increases by 450m. The contract asset is amortised over its life so if it was a 3 year contract, youd get a 150m expense in the p&l every year for 3.

Im sure there is more detail for example ive no idea how auditors get happy with the carrying value of the player contract in any given year but at a very basic level that's what is expect