Today marks the first day of the transfer window, with League One clubs having the rest of the month to complete deals they believe are necessary.
It represents an opportunity for all 24 sides to strengthen and bolster their ambitions for the remainder of the season.
Pompey are currently targeting a box-to-box midfielder who's capable of replacing the influential Andy Cannon should he pick up an injury.
But what positions and players are the Blues’ rivals aiming to sign throughout the window? And which teams could see key men be prised away by potential suitors?
Scroll down and click through the pages to see what likes of Sunderland, Ipswich and Hull have planned...
5. Burton Albion
Transfer plans are likely to be put on hold at the Pirelli Stadium as they seek a new manager. The Brewers parted company with Jake Buxton after their 4-3 loss to Wigan earlier this week. Photo: Pete Norton
6. Charlton Athletic
Lee Bowyer is optimisitc about making a couple of early signings, admitting 'one of them is ready to go, he’s been playing regularly and the other one hasn’t been playing so regularly'. Meanwhile, Erhun Oztumer could be recalled from Bristol Rovers but highly-rated Alfie Doughty is reportedly wanted by Celtic and Rangers. Photo: Bryn Lennon
7. Crewe Alexandra
Crewe have a number of young, exciting talents that could be prised away but David Artell insists his club have no pressure to sell. In terms of incoming, Artell says his side 'have to make sure we spend wisely and we will see where we get to. It is a chance to improve in terms of personnel and is one that we will be looking to do'. Photo: Pete Norton
8. Doncaster Rovers
CEO Gavin Baldwin said Rovers' owners have been impressed by manager Darren Moore and 'have been clear that they want to support us in having a very good second half of the season' as Donny bid for promotion. Photo: Daniel Chesterton