This means the Blues will be turning their attention to bringing in players aged 24 and under, with the best years of their careers ahead of them, and a profit likely to follow similar to those received for Matt Clarke and Jamal Lowe.
In January, 23-year-old Denver Hume was recruited from Sunderland for a fee in the region of £200k and was one of the first to be brought in under the new policy.
Here, we take a look at the 15 top-ranked under-24-year-old’s from League One and League Two who Pompey could realistically target in the summer from WhoScored’s player ratings.
Here are the options Danny Cowley could be presented with.
A message from the Editor, Mark Waldron
You can support our local team of expert Pompey writers by subscribing here for all the latest news from Fratton Park for 9p a day, thanks to our 30%-off transfer window deal.
1. Luke Jephcott - Plymouth
Position: Striker Age: 22 Appearances this season: 29 Goals: 9 Assists: 4 Contract: 18 months remaining Average Rating: 6.66 Photo: Harry Trump
2. Gerard Garner - Fleetwood
Position: Striker Age: 23 Appearances this season: 22 Goals: 7 Assists: 1 Contract: Expires at the end of the season Average Rating: 6.71 Photo: Pete Norton
3. Jack Tucker - Gillingham
Position: Centre back Age: 22 Appearances this season: 31 Goals: 1 Assists: 0 Contract: Expires at the end of the season Average Rating: 6.76 Photo: James Chance
4. Paddy Lane - Fleetwood
Position: Attacking midfield Age: 21 Appearances this season: 26 Goals: 4 Assists: 8 Contract: 18 months remaining Average Rating: 6.82 Photo: Pete Norton