Virtually every friendly saw new faces who needed identifying as a stack of players arrived in an effort to earn permanent deals.
That proved the case for the likes of Jay Mingi and Jayden Reid, but what about all the other men who failed to gain contracts.
We’ve located where those players ended up, with clubs at the highest level down to non league now their homes.
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1. Where are they now?
What happened to likes of Elijah Dixon-Bonner and other Pompey triallists. Picture: Lewis Storey/Getty Images
Photo: Lewis Storey
2. Jake Hesketh
Joined National League Eastleigh where he's made 14 appearances.
Photo: Chris Moorhouse
3. Ryan Leak
The defender arrived on trial following two years in Spain, featuring three times in pre-season. Following the team's return from St George’s Park, the 23-year-old was released and joined Burton where he has appeared 20 times for the Brewers this season.
Photo: Paul Collins
4. Sam Habergham
A player Danny Cowley knew from Lincoln. The full-back is currently without a club.
Photo: Rogan Thomson