No, they don't. Lets compare two players, both with a market value of 50m. One is an academy player, one has a remaining book value of 30m and 4 years left on the contract.
Academy player | Year 1 | Year 2 | Year 3 | Year 4 |
Sale: | 50m | 0 | 0 | 0 |
No sale: | 0 | 0 | 0 | 0 |
Total difference: 50m, all in year 1.
| Year 1 | Year 2 | Year 3 | Year 4 |
Sale: | 50m - 30m (remaining book value) = 20m | 0 | 0 | 0 |
No sale: | -7.5m | -7.5m | -7.5m | -7.5m |
Total difference: 50m. 27.5m in year 1, the remaining 22.5m over 3 years.
Clubs in immediate need of PSR wiggle room are incentivized to sell the academy player, because they are allowed to spend more right now. They get no future benefit from the sale when Year 1 is no longer included in the 3 year rolling period. Clubs that don't need to sell to buy are incentivized to keep the academy player over the other one, because they don't need the bigger influx right now and can benefit from better numbers in Year 2, 3 and 4 in the future.