The Blues have picked up four points in their opening three matches of the season and return to Fratton Park after last weekend’s 1-1 draw against West Brom.
Meanwhile, Preston make the long trip to PO4 looking to continue their unbeaten start, which included impressive wins against Leicester City and Ipswich Town.
We’ve taken a look at the early team and injury news from both camps ahead of this afternoon’s contest.
9. Mads Frokjaer - Doubt
The midfielder has been absent for the Lilywhites’ previous three games with a groin injury. Heckingbottom admitted the Dane could be back in contention for the trip to Fratton Park. | Getty Images
10. Harvey Blair - Out
The young winger sustained a hamstring injury on the final day of last term and has been absent throughout pre-season. Although he is making progress, Mousinho isn’t expecting a return any time soon. | Jason Brown/ProSportsImages
11. Lewis Gibson - Doubt
Gibson was rested for Tuesday’s Carabao Cup defeat against Wrexham with an ankle issue. The 25-year-old could, however, be back in contention for the Lilywhites this afternoon. | Getty Images
12. Tom McIntyre - Out
McIntyre’s future is another which will likely be away from Fratton Park, with the central defender not being given a shirt number for the new season. Photo: Jason Brown