Oxford United v Portsmouth – early team news
And Ben Close is expected to be available for the trip to the Kassam Stadium.
Close has recovered from an ankle problem with Brown training after a hamstring issue, while Bryn Morris is available for his debut.
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Hide AdThey are the players returning to the squad as Pompey travel up the A34 to take on Karl Robinson's side, but Kenny Jackett has been shorn of the services of Andre Green after he was recalled by Aston Villa.
Luke McGee (hand), Nathan Thompson (hamstring) and Oli Hawkins (calf) remain sidelined.
Meanwhile, Jamie Mackie is set to be handed an Oxford United recall for the visit of Pompey.
The experienced striker made an impressive impact after coming off the bench at Fleetwood last weekend, netting in the 2-2 draw.
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Hide AdWest Ham loanee Marcus Browne could make way for the change.
Boss Karl Robinson is still without Rob Hall, Jon Obika and Shandon Baptiste, who are all sidelined with cruciate ligament injuries.
Jamie Hanson is a doubt after coming off against Fleetwood with an ankle problem.
Ricky Holmes misses out with a back issue.