Pompey still require more additions as they prepare for their latest League One promotion charge.
The Blues boss has cast his eye over plenty of triallists throughout pre-season, with Sean Goss one of the latest to arrive.
The midfielder was released by third-tier rivals Shrewsbury at the end of last season.
Goss is a proven League One performer, scoring four goals in 54 games over the past two campaigns for the Shrews.
Indeed, there are several players who featured in Pompey’s division last term still without a club.
We take a look at who could fit the bill for the Blues...
5. Barrie McKay
The former Rangers winger joined Fleetwood from Swansea midway through last season. In total, he reigistered three goals and four assists for the Cod Army before being released by his parent club. Plenty of experience and still only 26. Photo: James Chance
6. Hakeeb Adelakun
The winger spent the first half of last season on loan at Hull, netting three times in 21 games before he was recalled by Bristol City in January. Photo: Pete Norton
7. Callum McFadzean
The left wing-back played 21 times for Sunderland last season as they suffered play-off semi-final defeat. Could be an option to provide cover for Lee Brown. Photo: Stu Forster
8. Darnell Johnson
The centre-back represented both Wigan and AFC Wimbledon on loan, making 22 outings in total last term before his Leicester exit. Johnson's also a former England youth international. Photo: Alex Davidson